compnay a charges $82 and allows unlimited mileage. company b has an intial fee of $55 and charges an additional $0.60 for every mile driven. for what mileage will company a charge less than company b

Answers

Answer 1

For distances of 45 miles or less, Company A is cheaper, while for distances greater than 45 miles, Company B is the cheaper option.

To determine at what mileage Company A charges less than Company B, we can set up an equation and solve for the variable, which in this case will represent the number of miles driven. Let x be the number of miles driven, and let C(x) represent the cost of renting a car from Company B after driving x miles.

We know that Company A charges a flat fee of $82 for unlimited mileage, so we can represent the cost of renting from Company A as a constant function C(x) = 82. For Company B, the cost function is given by:

C(x) = 55 + 0.60x

We want to find the value of x for which Company A charges less than Company B. In other words, we want to find the point at which the two cost functions intersect. To do this, we can set the two functions equal to each other and solve for x:

82 = 55 + 0.60x

27 = 0.60x

x = 45

Therefore, when the number of miles driven is 45 or less, Company A charges less than Company B. For any mileage greater than 45, it is cheaper to rent from Company B.

In summary, Company A charges a flat rate of $82 for unlimited mileage, while Company B charges an initial fee of $55 and an additional $0.60 for every mile driven. To find the point at which Company A charges less than Company B, we set the two cost functions equal to each other and solve for the number of miles driven. The result is 45 miles, meaning that for any distance of 45 miles or less, it is cheaper to rent from Company A, while for any distance greater than 45 miles, Company B is the cheaper option.

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Related Questions

which algorithm involves getting the next unsorted number and doing comparisons to see where it should go into a sorted sublist?

Answers

The algorithm that involves getting the next unsorted number and doing comparisons to determine its position within a sorted sublist is called the Insertion Sort algorithm.

The Insertion Sort algorithm works by maintaining a sorted sublist and repeatedly inserting the next unsorted element into the correct position within the sorted sublist.

Starting with the second element, it compares the element with the previous elements in the sorted sublist and shifts them to the right if they are greater, until finding the correct position to insert the element.

This process is repeated until all elements are sorted. Insertion Sort has a time complexity of O(n^2) in the worst case, making it efficient for small lists or partially sorted data.

Its main advantage is that it performs well for nearly sorted or small input sizes. The key idea of this algorithm is the comparison-based approach to find the correct position for each unsorted element within the sorted sublist.

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One-variable Statistics:Question 3
The list below shows the average monthly temperatures
in degrees Fahrenheit in Ahmed's city for the past year.
74, 86, 90, 68, 76, 64, 68, 84, 90, 94, 82, 92
Which box-and-whisker plot correctly represents the
data in the list?
Select one:

Answers

The box plot that represents the data is the third option.

Which box plot represents the data?

A box plot is a graph that is used to study the distribution and level of a set of scores. The box plot consists of two lines and a box. the two lines are known as whiskers.

The first whisker represents the minimum number and the end of the second whisker represents the maximum number. On the box, the first line to the left represents the lower quartile. The next line on the box represents the median. The third line on the box represents the upper quartile.

The numbers arranged in ascending order : 64, 68, 68, 74, 76, 82, 84, 86, 90, 90, 92,  94,

The minimum number is 64 and the maximum number is 94.

First quartile = 1/4(n + 1)

1/4 x (12 + 1) = 3.25 number = 71

Third quartile =  3/4(n + 1)

3/4 x (12 + 1) = 9.75 number = 90

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Eleven less than seven times a number is five more than six time the number. What is the number?

Answers

Answer:

Thus, the number is equal to x =16 the Answer 16 Basically

Find the exact length of the polar curve described by: r = 4e-⁰ on the interval 7/6π ≤ 0 ≤ 5π

Answers

The exact length of the polar curve described by r=4e^(-theta) on the interval 7/6pi ≤ theta ≤ 5pi is approximately 36.60 units.

To find the length of the polar curve, we can use the formula: L = ∫(a to b) sqrt[r^2 + (dr/d theta)^2] d theta. Applying this formula to the given polar curve, we get L = ∫(7/6pi to 5pi) sqrt[(4e^(-theta))^2 + (-4e^(-theta))^2] d theta. Simplifying this expression, we get L = 8∫(7/6pi to 5pi) e^(-theta) dtheta. Evaluating this integral, we get L = 8[e^(-7/6pi) - e^(-5pi)] ≈ 36.60 units.

Therefore, the exact length of the polar curve described by r=4e^(-theta) on the interval 7/6pi ≤ theta ≤ 5pi is approximately 36.60 units. This formula can be used to find the length of any polar curve, given its equation and the interval in which it is being evaluated. It is important to note that the formula for the length of a polar curve is derived using calculus, specifically the arc length formula. The arc length formula is used to find the length of a curve in the Cartesian coordinate system, while the formula for the length of a polar curve is used to find the length of a curve in the polar coordinate system.

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A farmer sells 8.7 kilograms of pears and apples at the farmer's market.
3
4
of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market?

Answers

The kilograms of apple she sell at the farmer's market is A = 2.175 kg

Given data ,

To find the weight of apples sold by the farmer, we can subtract the weight of pears from the total weight

Given that 3/4 of the weight is pears, we can calculate the weight of pears by multiplying the total weight by 3/4:

Weight of pears = (3/4) x 8.7 kilograms = 6.525 kilograms

Since the total weight is 8.7 kilograms, we can subtract the weight of pears to find the weight of apples

On simplifying the equation , we get

Weight of apples = Total weight - Weight of pears

A = 8.7 kilograms - 6.525 kilograms = 2.175 kilograms

Hence , the farmer sold approximately 2.175 kilograms of apples at the farmer's market

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Total cost 217 sales tax 8.5% what is the original price

Answers

Answer:

$200

Step-by-step explanation:

To find the original price of an item that costs $217 with an 8.5% sales tax, you would first divide the total cost by 1 plus the tax rate (as the tax is calculated as a percentage of the original price plus tax). This would give you the price without the sales tax. So, $217 divided by 1.085 equals approximately $200. The original price before the sales tax was added would be $200.

Rio has £5. He wants to buy a
ruler and some pencils. A ruler
costs £1.45 and each pencil
costs 53p. What is the
maximum number of pencils
Rio can buy?

Answers

Answer:

6

Step-by-step explanation:

£5 - £1.45 = £3.55

£3.55 ÷ 0.53p = 6.698

since you cant have .6 of a pencil, the maximum number of pencils Rio can buy is 6

Answer:

6

Step-by-step explanation:

call £5 500p.

£1.45 =145p

500 - 145 = 355.

355/53 = 6.7

so the maximum number of pencils he can buy is 6.

you can check this by inputting those numbers.

£1.45 + 6 X £0.53

= £1.45 + £(3.18)

=£4.63

Rio still has 37p left. not enough for another pencil

how many peices that are exactly 5 inches long can sue cut from a string that is 7 feet long

Answers

Answer:

16

Step-by-step explanation:

7 feet x 12 inches/foot = 84 inches

Then we divide the total length of the string (84 inches) by the length of each piece (5 inches) to get the total number of pieces:

84 inches / 5 inches per piece = 16.8 pieces

Since we cannot have a fractional number of pieces, we round down to the nearest whole number to get the final answer:

16 pieces

for example, what should the value of a partition function be at 0 k?

Answers

So, at 0 K, the value of the partition function is equal to the number of energy states plus one, which is 1.

The partition function (Z) is a concept used in statistical mechanics to describe the distribution of particles among different energy states. It is a sum of exponential terms, each corresponding to a different energy state. At absolute zero temperature (0 K), all particles are in their lowest energy state, and there is only one possible state with zero energy.

The partition function at 0 K is given by:

Z = Σ exp(-Ei/kT)

where Ei represents the energy of the ith state, k is the Boltzmann constant, and T is the temperature.

Since all particles are in the lowest energy state (E = 0), the term exp(-Ei/kT) becomes exp(0) = 1. Therefore, the partition function simplifies to:

Z = Σ (for i = 0 to N) 1 = N + 1

where N represents the total number of energy states.

At 0 Kelvin (absolute zero), the value of the partition function should be 1.

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simplify write each expression without using the absolute value symbol. |x-(-18)| if x

Answers

The simplified expression using a piecewise function:

f(x) = { x + 18, if x ≥ -18

{-x - 18, if x < -18

How to solve

To simplify the expression |x - (-18)| without using the absolute value symbol, we need to consider two cases: when the expression inside the absolute value is positive (or equal to zero) and when it is negative.

When x - (-18) ≥ 0:

x - (-18) = x + 18, so in this case, the expression simplifies to x + 18.

When x - (-18) < 0:

Negate expression: -(x + 18) = -x - 18.

Now, we need to write the simplified expression using a piecewise function:

f(x) = { x + 18, if x ≥ -18

{-x - 18, if x < -18

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an industrial engineer wants to test the effect of three different ways of assembling a part on the total assembly time. five people are randomly assigned to each of the three assembly methods, and the total assembly time (in seconds) is recorded. how many degrees of freedom (df1) does the treatment sum of squares have? how many degrees of freedom (df2) for the error sum of squares?

Answers

The variation in assembly times within each assembly method the treatment sum of squares is 2, and the degrees of freedom (df2) for the error sum of squares is 12.

To determine the degrees of freedom (df1) for the treatment sum of squares, we need to consider the number of groups (assembly methods) being compared.

In this case, there are three different ways of assembling the part. Since there are three groups, the degrees of freedom for the treatment sum of squares is calculated as:

df1 = number of groups - 1

= 3 - 1

= 2

To calculate the degrees of freedom (df2) for the error sum of squares, we need to consider the total number of observations and the number of groups.

In this case, there are 5 people assigned to each assembly method, and there are 3 assembly methods in total. so the total number of observations is 5 * 3 = 15.

df2 = total number of observations - number of groups

= 15 - 3

= 12

Therefore, the degrees of freedom (df1) for the treatment sum of squares is 2, and the degrees of freedom (df2) for the error sum of squares is 12.

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Let fbe the function given by fx=frac 2x2+14x-16x2-9x+8 . For what values of x does f have a removable discontinuity? A l only B 8 only C -8 and 1 D 1 and 8.

Answers

The answer is option D, which is 1 and 8.To find the values of x where f has a removable discontinuity, we need to check if there are any values of x that make the denominator of f(x) equal to zero.

If this occurs, the function will have a vertical asymptote at that point, and if the limit of the function as x approaches that point exists, then the function has a removable discontinuity at that point.

In this case, we can see that the denominator of f(x) is (2x-1)(4x+8), which equals zero at x=1/2 and x=-2. However, we need to check if these values of x result in a removable discontinuity. At x=1/2, the function f(x) is undefined, and the limit as x approaches 1/2 is -1/3. Therefore, f(x) has a removable discontinuity at x=1/2. At x=-2, the function f(x) is also undefined, but the limit as x approaches -2 does not exist. Therefore, f(x) does not have a removable discontinuity at x=-2. Thus, the answer is option D, which includes the value 1 where f has a removable discontinuity, and the value 8 where f does not have a removable discontinuity.

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It rained 18 days in May, 11 in June, 8 in July, 10 in August, and 13 in September. What is the average number of days it rained each month?

Options:
11
12
10

Answers

Answer:  10

Step-by-step explanation: if you add all of them together you get 50 the oly one that can go into 50 without passing is 10

I need to know this for a quiz tomorrow……. HELP!

Answers

The quadratic function for the graph in this problem is given as follows:

y = 2(x + 1)(x - 2).

How to define the quadratic function?

The roots for the quadratic function in this problem are given as follows:

x = -1.x = 2.

Hence the linear factors of the function are given as follows:

x + 1.x - 2.

Considering the factor theorem, the function is given by the product of it's linear factors and the leading coefficient a, hence:

y = a(x + 1)(x - 2)

When x = 0, y = -4, hence the leading coefficient a is obtained as follows:

-2a = -4

2a = 4

a = 2.

Hence the function is:

y = 2(x + 1)(x - 2).

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Find the missing sides of WX and WV

Answers

Check the picture below.

4. What is the measure of arc BC
B
A
98⁰
C
N
80°
70°
D

Answers

The measure of arc BC in a circle where the two chords, chord AD and chord AC are equal in measure, is 146°. Therefore, the correct option is option C.

The measure of arc made by parallel chord in a circle are equal in measure.

arc BC=8x-46°                

arc AD=5x+26°                

arc BC=arc AD

8x-46°=5x+26°

x=24°

arc BC=8x-46°

arc BC=8(24°)-46°

arc BC=192°-46°

arc BC=146°

Therefore, the correct option is option C.

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Your question is incomplete but most probably your full question was,  

HELP ME PLEASE
The students in Mr. Andrewses class rolled a six-sided number cube. The table shows the results. Based on these results, which is closest to the experimental probability of rolling a 5?
Answer choices:
a 0.11
b 0.23
c 0.99
d 0.67
please help!!!!

Answers

The experimental probability of rolling a 5 is 4/36, which simplifies to 1/9, or approximately 0.11.

We have,

The experimental probability of an event happening is the ratio of the number of times the event occurred to the total number of trials.

In this case,

The event is rolling a 5 and the total number of trials is the sum of the frequencies, which is 8 + 3 + 9 + 6 + 4 + 6 = 36.

The frequency of rolling a 5 is 4.

Therefore,

The experimental probability of rolling a 5 is 4/36, which simplifies to 1/9, or approximately 0.11.

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Find a solution of the initial-value problem.y′=−(14)y2,y(0)=1.

Answers

To solve the given initial-value problem, we can separate the variables and integrate both sides. The final answer is Therefore, the solution to the initial-value problem is y = [tex]\frac{-1}{(-14t - 1)}[/tex], where y(0) = 1.

Given: y' = [tex]-(14)y^2\\[/tex]

Initial condition: y(0) = 1

Separating variables:

[tex]\frac{Dy}{y^2 }[/tex]= -14 dt

Integrating both sides:

∫([tex]\frac{1}{y^2}[/tex]) dy = ∫-14 dt

Integrating the left side:

[tex]\frac{-1}{y}[/tex]= -14t + C1

Solving for y:

y = [tex]\frac{-1}{-14t + C1}[/tex]

Using the initial condition y(0) = 1:

1 = [tex]\frac{-1}{C1}[/tex]

C1 = -1

Substituting the value of C1 back into the solution:

y = [tex]\frac{-1}{(-14t - 1)}[/tex]

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when assigning subjective probabilities, use experience, intuition, and any available data.

Answers

The statement is a suggestion or guideline for how to assign subjective probabilities.

Subjective probabilities are probabilities that are based on personal beliefs or judgments rather than on empirical evidence. Experience and intuition can be used to make informed guesses about the likelihood of an event occurring.

Available data can also be used to inform subjective probabilities, such as historical data or expert opinions. However, subjective probabilities may not always be reliable as they can be influenced by personal biases or limited information.

Therefore, it is important to use critical thinking and consider multiple sources of information when assigning subjective probabilities.

Additionally, subjective probabilities may be useful in situations where empirical data is not available or difficult to obtain, but they should be used with caution and always be subject to reassessment as new information becomes available.

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solve this answer by using this picture

Answers

Answer:

write a story illustrate the saying that a lazy man goes to bed hungry

find the t-value such that the area in the right tail is 0.15 with 13 degrees of freedom.

Answers

The t-value such that the area in the right tail is 0.15 with 13 degrees of freedom is approximately 1.350.

To find the t-value such that the area in the right tail is 0.15 with 13 degrees of freedom, we can use a t-table or a calculator with a t-distribution function.

Using a t-table:

Look for the row that corresponds to 13 degrees of freedom.

Look for the column that contains the area 0.15.

The intersection of the row and column is the t-value we are looking for.

Using a calculator:

Use the t-distribution function with 13 degrees of freedom.

Set the upper limit of integration to a large number, such as 100, to calculate the area in the right tail.

Find the t-value such that the area to the right of it is 0.15.

Using either method, we find that the t-value such that the area in the right tail is 0.15 with 13 degrees of freedom is approximately 1.350.

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For a normal distribution, what percentage of data falls within three standard deviations of the mean?

Answers

The percentage of data that falls within three standard deviations of the mean is 99.7%.

What percentage of data falls within three standard deviations of the mean?

The percentage of data that falls within three standard deviations of the mean is determined as follows;

one standard deviation below the mean = 34%

one standard deviation above the mean = 34%

So one standard deviation of the mean = 34% + 34% = 68%

Based on this information, we can conclude the following for a  normal distribution:

About 68% of the data falls within one standard deviation of the mean.About 95% of the data falls within two standard deviations of the mean.About 99.7% of the data falls within three standard deviations of the mean.

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The complete question is below:

For a normal distribution (shown in the diagram), what percentage of data falls within three standard deviations of the mean?

PLEASE HELP Solve -2p² - 5p + 1 = 7p² + p using the quadratic formula.

Answers

The solutions to the quadratic equation -2p² - 5p + 1 = 7p² + p are p₁ = (-1 + √2) / 3 and p₂ = (-1 - √2) / 3. To solve the quadratic equation -2p² - 5p + 1 = 7p² + p, we can rearrange the equation to bring all the terms to one side, creating a standard quadratic form: 0 = 7p² + p + 2p² + 5p - 1.

Combining like terms, we get 0 = 9p² + 6p - 1.

Now, we can apply the quadratic formula, which states that for an equation in the form ax² + bx + c = 0, the solutions for x are given by x = (-b ± √(b² - 4ac)) / (2a).

For our equation, a = 9, b = 6, and c = -1. Plugging these values into the quadratic formula, we have:

p = (-6 ± √(6² - 4[tex]\times[/tex] 9 [tex]\times[/tex] -1)) / (2 [tex]\times[/tex] 9)

Simplifying further:

p = (-6 ± √(36 + 36)) / 18

p = (-6 ± √72) / 18

Since the value under the square root (√72) can be simplified as √(36 [tex]\times[/tex] 2) = 6√2, we have:

p = (-6 ± 6√2) / 18

Now, we can simplify and express the two solutions:

p₁ = (-6 + 6√2) / 18

p₂ = (-6 - 6√2) / 18

To further simplify, we can divide both the numerator and denominator by 6:

p₁ = (-1 + √2) / 3

p₂ = (-1 - √2) / 3

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A coffee shop invited its customers to fill out a survey. The results showed that the relationship between the number of minutes a customer spends waiting in line, m, and the numerical rating the customer gave the coffee shop, s, could be modeled by the equation s= -0.10m +5. According to the model, how many additional minutes waiting in line would cause a customer to lower his or her rating by 1?​

Answers

According to the model, an additional 10 minutes waiting in line would cause a customer to lower his or her rating by 1.

How do we determine the additional minutes waiting in line would cause a customer to lower his or her rating by 1?

To determine the additional minutes waiting in line that would cause a customer to lower their rating by 1, we set s = 4 (since 5 - 1 = 4) in the equation and solve for m:

Given: s = -0.10m + 5

where:

s = the numerical rating given by the customer

m = the number of minutes the customer spent waiting in line.

So, 4 = -0.10m + 5

-0.10m = -1

m = 10

Therefore, based on the model, an additional 10 minutes waiting in line would cause a customer to lower their rating by 1.

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the mean salary for the 20 workers in company a is $93 per week, whereas in company b the mean salary for its 30 workers is $88 per week. if the two companies merge, what is the mean salary for the 50 employees of the new company?

Answers

To find the mean salary for the 50 employees of the new company, we need to combine the salaries of all the workers from both companies and divide by the total number of employees. So, the mean salary for the 50 employees of the merged company is $90 per week.

The mean salary for the 20 workers in Company A is $93 per week, and for the 30 workers in Company B, it's $88 per week. To find the mean salary for the 50 employees of the merged company, you'll need to calculate the total combined salary for all workers and divide it by the total number of employees.

finding the total salary of the 20 workers in company A. We know that the mean salary is $93 per week, so we can multiply that by the number of workers to get the total salary:

Total salary in company A = 20 x $93 = $1860

Next, we'll do the same thing for company B. The mean salary is $88 per week, and there are 30 workers:

Total salary in company B = 30 x $88 = $2640

Now we can add the two total salaries together to get the total salary for all 50 employees:

Total salary for all 50 employees = $1860 + $2640 = $4500

Finally, we can divide the total salary by the total number of employees (50) to find the mean salary for the new company:

Mean salary for the new company = $4500 / 50 = $90 per week

Therefore, the mean salary for the 50 employees of the new company is $90 per week.

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rosa has pounds of dough. she uses of a pound for one medium loaf of bread. how many medium loaves of bread could be made from rosa's dough?

Answers

Rosa has a certain amount of dough, and each medium loaf of bread requires a fraction of a pound. To determine how many medium loaves of bread Rosa can make, we divide the total amount of dough by the fraction of a pound needed for one loaf. So the answer is 5.

Explanation: If we let "x" represent the total amount of dough that Rosa has in pounds, and "y" represent the fraction of a pound needed for one medium loaf of bread, we can set up a simple equation to solve for the number of loaves, "n":

x / y = n

Given that Rosa has a certain amount of dough, we need to determine the value of "y" (the fraction of a pound needed for one loaf) in order to calculate "n" (the number of loaves). Since the exact fraction is not provided in the question, we would need additional information to solve for "y" and compute the exact number of medium loaves Rosa can make.

For example, if it is given that Rosa uses 1/4 pound of dough for one medium loaf, we can substitute this value into the equation:

x / (1/4) = n

Simplifying the equation, we would multiply both sides by 1/4:

4x = n

(15/4)/(3/4) = 5

So, Rosa would be able to make 4 times the amount of dough in medium loaves of bread, which is 5.

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Complete Question: Rosa has 3 3/4 pounds of dough. She uses 3/4 of a pound for one medium loaf of bread. How many medium loaves of bread could be made from Rosa's dough?

20 POINTS
A light pole casts a 35-foot-long shadow. The angle of elevation from the tip of the shadow to the top of the light pole is 23°. To the nearest foot, what is the height of the light pole?

Answers

Check the picture below.

[tex]\tan(23^o )=\cfrac{\stackrel{opposite}{h}}{\underset{adjacent}{35}} \implies 35\tan(23^o)=h \implies 15\approx h\\[/tex]

Make sure your calculator is in Degree mode.

what are the requirements to perform a one-way anova? is the test robust?

Answers

Thus, a one-way ANOVA test is robust if the data meets the above requirements. It is a powerful statistical tool that can help analyze differences between means of multiple groups.

A one-way ANOVA is a statistical test used to analyze the differences between means of two or more groups. There are certain requirements that need to be met before performing a one-way ANOVA.

The first requirement is that the data should be normally distributed. Normality can be checked using various methods such as histogram, Q-Q plot, or Shapiro-Wilk test. If the data is not normally distributed, a transformation can be applied to the data to make it normally distributed.The second requirement is that the variances of the groups should be equal. This can be checked using Levene’s test for equality of variances. If the variances are not equal, a modified version of the ANOVA test, such as Welch’s ANOVA, can be used.The third requirement is that the groups should be independent of each other. This means that the data in one group should not be related to the data in another group.The fourth requirement is that the sample size in each group should be at least 30. However, if the data is normally distributed and the variances are equal, a smaller sample size may be used.

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Final answer:

To perform a one-way ANOVA, the observations need to be independent, the data should be normally distributed, and the variances should be equal. However, the test is robust to deviations from these assumptions, particularly if the group sizes are equal.

Explanation:

To perform a one-way ANOVA (Analysis of Variance), there are several requirements you should meet:

Independence of observations: each group should be separate and not influence the others.Normality: the data in each group should follow a normal distribution.Homogeneity of variance: the variances of the groups should be equal.

The one-way ANOVA is considered robust to deviations from normality and homogeneity of variance, especially when the group sizes are equal. However, if smokes are very unequal or if there are extreme outliers, it might not be as robust.

If these assumptions are not met, a non-parametric alternative like the Kruskal-Wallis test might be a better choice.

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suppose a system of linear equations has a 3x5 augmented matrix whose fifth column is not a pivor column. is the system consisten why or why not

Answers

The system of linear equations is not necessarily inconsistent just because its 3x5 augmented matrix has a non-pivot column in the fifth position.

It is possible that the system has infinitely many solutions. However, it is also possible that the system has no solutions. The key factor that determines whether the system is consistent or not is whether the corresponding coefficient matrix has full row rank (i.e., has three pivot rows).

If the coefficient matrix has full row rank, then the system is consistent, regardless of the structure of the augmented matrix. If the coefficient matrix does not have full row rank, then the system is inconsistent.

If the system is consistent, we can use row operations to reduce the augmented matrix to row echelon form or reduced row echelon form, and then use back substitution to find the solutions.

If the system is inconsistent, we can use row operations to derive a contradiction (e.g., a row of the form [0 0 ... 0 b], where b is a nonzero constant), which means that the system has no solutions.

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Suppose that X is the number of successes in an experiment with 9 independent trials where the probability of success is 2/5 . Find each of the following probabilities. Round answers to the nearest ten-thousandth.P (X < 2)P(X ≥ 2)

Answers

P(X < 2) ≈ 0.1338 and P(X ≥ 2) ≈ 0.8662.

Determine the probability?

To find the probability P(X < 2), we need to calculate the probability of having fewer than 2 successes in 9 independent trials. This includes the cases where X is 0 or 1.

To find the probabilities P(X < 2) and P(X ≥ 2) in this scenario, we'll use the binomial distribution formula.

The binomial distribution formula is given by:

P(X = k) = C(n, k) * p^k * (1 - p)^(n - k)

Where:

P(X = k) is the probability of getting exactly k successes,

n is the number of trials,

k is the number of successes,

p is the probability of success in a single trial, and

C(n, k) is the number of combinations of n items taken k at a time.

Given that n = 9 and p = 2/5, we can calculate the probabilities as follows:

P(X < 2):

P(X < 2) = P(X = 0) + P(X = 1)

P(X = 0):

P(X = 0) = C(9, 0) * (2/5)^0 * (1 - 2/5)^(9 - 0)

Using the combination formula C(9, 0) = 1:

P(X = 0) = 1 * 1 * (3/5)^9

P(X = 1):

P(X = 1) = C(9, 1) * (2/5)^1 * (1 - 2/5)^(9 - 1)

Using the combination formula C(9, 1) = 9:

P(X = 1) = 9 * (2/5) * (3/5)^8

Now we can calculate P(X < 2) by adding P(X = 0) and P(X = 1).

P(X ≥ 2):

P(X ≥ 2) = 1 - P(X < 2)

After calculating P(X < 2), we can subtract it from 1 to find P(X ≥ 2).

Let's perform the calculations:

P(X = 0) = 1 * 1 * (3/5)^9 = 0.01917808 (rounded to 8 decimal places)

P(X = 1) = 9 * (2/5) * (3/5)^8 = 0.11462304 (rounded to 8 decimal places)

P(X < 2) = 0.01917808 + 0.11462304 = 0.13380112 (rounded to 8 decimal places)

P(X ≥ 2) = 1 - P(X < 2) = 1 - 0.13380112 = 0.86619888 (rounded to 8 decimal places)

Therefore, P(X < 2) ≈ 0.1338 and P(X ≥ 2) ≈ 0.8662.

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