true or false? when performing regression analysis, different samples will all yield the same sample regression line.

Answer:

Step-by-step explanation:

step-by-step

A boxplot is a graphical representation of data distribution, and it can be used to compare the salary distributions of construction workers and teachers. To determine the percentage of teachers that a person making the minimum salary for a construction worker is making more than, we must first understand the data for both groups.

The minimum salary for a construction worker is a specific value, representing the lowest amount paid to workers in that profession. In contrast, teachers' salaries can vary based on various factors such as experience, education level, and location. Comparing these two distributions can provide insights into the relative earnings of these professions.

Using a boxplot, the minimum, first quartile, median, third quartile, and maximum values can be visually represented for each group. The comparison between the minimum salary for a construction worker and the distribution of teachers' salaries can be observed by looking at the overlap of these two boxplots.

If the minimum salary for a construction worker falls within the first quartile of teachers' salaries, it would mean that a person earning that salary is making more than 25% of teachers. If it falls within the second quartile (between the first and median), the person is making more than 50% of teachers. Similarly, if it falls within the third quartile, they would be making more than 75% of teachers.

To provide a precise percentage, the data for both groups needs to be analyzed and compared. However, without specific numbers, a definitive answer cannot be given. In summary, a boxplot can be used to visualize and compare the salary distributions of construction workers and teachers to determine what percentage of teachers a person making the minimum salary for a construction worker is earning more than.

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There are 362,880 ways to line up the ten people if the groom must be to the immediate left of the bride in the photo. To calculate this, treat the groom and bride as a single unit, so you have 9 units to arrange (8 individuals + 1 bride-groom pair). There are 9! (9 factorial) ways to arrange these units, which is 362,880.

If the groom must be to the immediate left of the bride in the photo, then we can think of them as a single entity that must always appear together in the lineup. Therefore, we only need to consider the arrangements of the remaining 8 people. There are 8! (8 factorial) ways to arrange 8 people. Thus, there are 8! ways to line up the ten people if the groom must be to the immediate left of the bride in the photo.

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The probability of getting an even number when rolling a six-sided number cube is 1/2 or 50%, the probability of getting an even number is the number of ways to roll an even number (3) divided by the total number of possible outcomes (6), which is 3/6 or simplified to 1/2. This means that if you roll the cube multiple times, you can expect to get an even number about half of the time.

The probability of getting an even number when rolling a six-sided number cube is 1/2 or 50%. This is because there are three even numbers (2, 4, 6) and three odd numbers (1, 3, 5) on the cube. Each number has an equal chance of being rolled, so the probability of rolling an even number is the same as rolling an odd number. Therefore, the probability of getting an even number is the number of ways to roll an even number (3) divided by the total number of possible outcomes (6), which is 3/6 or simplified to 1/2. This means that if you roll the cube multiple times, you can expect to get an even number about half of the time.

The probability of getting an even number when rolling a six-sided number cube can be determined by examining the possible outcomes. A standard six-sided cube has numbers ranging from 1 to 6. Among these, the even numbers are 2, 4, and 6. To find the probability, you can divide the number of successful outcomes (rolling an even number) by the total number of possible outcomes (rolling any number from 1 to 6).

In this case, there are 3 successful outcomes (2, 4, and 6) and 6 total possible outcomes (1, 2, 3, 4, 5, and 6). So, the probability of getting an even number is:

Probability = (Number of successful outcomes) / (Total number of possible outcomes) = 3/6

Upon simplification, you'll find the probability is:

Probability = 1/2 or 50%

Therefore, when rolling a six-sided number cube, the probability of getting an even number is 1/2 or 50%.

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Each year the account earns 5% interest, and you deposit 8% of your annual income with an annual income of $30000 which is growing at a continuous rate of 3% per year. The given differential equation models this situation dy/dt= 0.05y+2400e^(0.03*t)

First, let's break down the information given in the problem:
- y(t) represents your retirement account balance in dollars after t years.
- The account earns 5% interest each year, which means that the balance increases by 5% of the previous year's balance.
- You deposit 8% of your annual income into the account each year. Your current annual income is $30,000, but it is growing at a continuous rate of 3% per year.
Now, let's write the differential equation to model this situation. We know that the rate of change of y(t) is equal to the sum of the interest earned and the deposits made each year. In other words:
dy/dt = rate of interest + rate of deposits
The rate of interest is simply 5% of the current balance, or 0.05y. The rate of deposits is 8% of your current annual income, which is $30,000 plus 3% of your current annual income for each additional year. We can express this as [tex]0.08(30000)(1.03)^t[/tex]. Putting it all together, we get:
dy/dt = 0.05y + [tex]0.08(30000)(1.03)^t[/tex]
But this isn't quite in the form of our desired answer yet. We can simplify the right-hand side by factoring out 0.05y, which gives us:
dy/dt = [tex]0.05y(1 + 1.6(1.03)^t)[/tex]
Now we have our differential equation in the form of y' = ky, where k = [tex]0.05(1 + 1.6(1.03)^t)[/tex]. To solve this equation, we can use the separation of variables:
dy/y = k dt
Integrating both sides gives us:
ln|y| = kt + C
where C is the constant of integration. Exponentiating both sides gives us:
|y| = [tex]e^{(kt+C)}[/tex] = [tex]Ce^{(kt)}[/tex]
where C is a constant that depends on the initial conditions (i.e. the value of y when t=0). We can solve for C using the fact that y(0) = some initial value, say $10,000:
|10000| = [tex]Ce^{(0)}[/tex]
C = 10000
So our final solution is:
y(t) = [tex]10000e^{(kt)}[/tex]
where k is still equal to 0.05(1 + 1.6(1.03)^t). If we substitute this expression for k and simplify, we get:
y(t) = [tex]10000e^{(0.05t + 2400(e^{(0.03t)-1)/0.03)}}[/tex]
which is equivalent to the answer given: dy/dt = 0.05y + [tex]2400e^{(0.03t)}[/tex]

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Tyler's grandparents can follow his basketball games by checking the local deaf school's website or social media pages for updates on team statistics and videos. Additionally, they can search for local news outlets or sports websites that may cover the games and provide more information about Tyler and his team.

Tyler's grandparents can look for statistics and videos about him and his team on the website or social media pages of his local deaf school. They can also check with the league that his team plays in to see if they have any online resources available for following games and keeping track of player statistics. Another option is to reach out to Tyler's coach or the school's athletic department to see if they can provide any updates or links to game footage.

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The total amount the mechanic will need in retirement savings to meet their retirement income goal is $880,000.

Option A.

The total amount the mechanic will need in retirement savings to meet their retirement income goal is calculated as follows;

80% of  $44,000 = ?

= 0.8 x  $44,000

= $35,200

The amount needed to generate $35,200 annually at a 4% withdrawal rate is calculated as follows;

Let the amount = x

0.04x = $35,200

x = $35,200/0.04

x = $880,000

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Answer:

6 pints or 3 quarts

Step-by-step explanation:

We can represent the actions onto the ice cream with mathematical operations. First, we can represent giving 1 quart away as subtraction:

14 pints - 1 quart

= 14 pints - 2 pints

= 12 pints

So after giving 1 quart to his neighbor, Jahlil has 13 pints left. Of these 13 pints, he uses half to make milkshakes. We can represent a half by dividing by 2:

12 pints / 2

= 6 pints

= 3 quarts

So, Jahlil used 6 pints or 3 quarts of ice cream to make the milkshakes.

The equation of the circle with center (8,3) and radius 4 is (x - 8)² + (y - 3)² = 16.

A circle is a two-dimensional shape consisting of all the points in a plane that are equidistant from a given point called the center.

The distance between any point on the circle and the center is called the radius of the circle. The circumference of a circle is the distance around its outer edge, and the diameter is the distance across the circle through its center.

The equation of a circle with center (h,k) and radius r is given by:

(x - h)² + (y - k)² = r²

Using the given values, we can substitute h = 8, k = 3, and r = 4 into the equation:

(x - 8)² + (y - 3)² = 4²

Simplifying and expanding, we get:

(x - 8)² + (y - 3)² = 16

Therefore, the equation of the circle with center (8,3) and radius 4 is (x - 8)² + (y - 3)² = 16.

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The most appropriate option in this context would be "stack".

"Stack" is commonly used to refer to a collection of papers or documents, such as a pile of notes. "Wad" typically refers to a small, crumpled mass of paper or money, while "bunch" suggests a more haphazard or unorganized grouping. "Album" typically refers to a book or binder containing a collection of photographs or other images, rather than notes.

Answer:

c. stack is the correct answer

Step-by-step explanation & Answer:

To find how long it takes for the diver to reach a point 1 meter above the water, we need to set the height equation equal to 1 and solve for t:

-4.9t^2 + 3.5t + 10 = 1

-4.9t^2 + 3.5t + 9 = 0

We can solve for t using the quadratic formula:

t = (-b ± √(b^2 - 4ac)) / 2a

t = (-3.5 ± √(3.5^2 - 4(-4.9)(9))) / 2(-4.9)

t ≈ 1.65 seconds or t ≈ 1.06 seconds

Therefore, it takes the diver approximately 1.65 seconds or 1.06 seconds to reach a point 1 meter above the water.

The equation from part A has two solutions.

Not all of the solutions make sense in the situation. One of the solutions is negative, which does not make sense in the context of the problem. The other solution is the time it takes for the diver to reach a point 1 meter above the water.

The magnitude of the addition of three vectors is equal to 34.405.

Vectors are numbers described by magnitude (r) and direction (θ), in degrees. Vectors in rectangular form are described by expressions of the form:

v = r · cos θ + r · sin θ

Where:

The magnitude of the addition of a given number of vectors can be found by means of Pythagorean theorem:

R = √[(∑ r · cos θ)² + (∑ r · sin θ)²]

R = √[(50 · cos 35° + 65 · cos 180° + 10 · cos 245°)² + (50 · sin 35° + 65 · sin 180° + 10 · sin 245°)²]

R = √[(- 28.265)² + 19.616²]

R = 34.405

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The two column proof is completed as follows

Statement                     Reason

line RS ≅ line UT             Given

line RT ≅ line UT             Given

line ST ≅ line TS             Reflexive property

Δ RST ≅ ΔUTS               SSS congruence theorem

The refleхive propеrty is a mathеmatical propеrty thаt statеs thаt аny element is еqual to itself. I

This is  to say, for аny mathеmatical object or value, х, the refleхive propеrty statеs thаt

This propеrty holds truе for all mathеmatical operаtions and is used to proof that all the sides of the triangle RST is congruent to sides of the triangle UTS. This is according to the SSS congruence theorem

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The polygon which on rotated gives the given cylinder is a rectangle with dimensions 10 inches × 9 inches.

Given a cylinder with the diameter of the base 18 inches and the height of the cylinder 10 inches.

This cylinder is formed by rotating some polygon around YZ.

The polygon must be a rectangle which has the height or the length equal to the height of the cylinder.

So length = 10 inches

The width of the rectangle will be half of the diameter.

Width = 18/2 = 9 inches

Hence the rotated polygon is a rectangle with length 10 inches and width 9 inches.

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By using the shell method to set up and evaluate the integral that gives the volume of the solid generated by revolving the plane region about the y-axis, given the functions y = 49 - x^2 and y = 0.The volume of the solid generated by revolving the plane region about the y-axis is 0.

To find the volume of the solid,

we'll use the shell method formula:
V = 2 * pi * ∫[a, b] x * h(x) dx

In this case, a = -7, b = 7 (because x = ±√(49 - y)), and h(x) = 49 - x^2. So the integral becomes:
V = 2 * pi * ∫[-7, 7] x * (49 - x^2) dx

Now, let's evaluate the integral:

1. Expand the integrand:

x * (49 - x^2) = 49x - x^3
2. Find the antiderivative:

∫(49x - x^3) dx = 49x^2/2 - x^4/4 + C

3. Plug in the limits of integration and subtract:

  [(49(7)^2)/2 - (7)^4/4] - [(49(-7)^2)/2 - (-7)^4/4] = [49(49) - 2401/4] - [49(49) - 2401/4] = 0

4. Multiply by the constant

(2 * pi): 2 * pi * 0 = 0

The volume of the solid generated by revolving the plane region about the y-axis is 0.

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x^2 + y^2 + z^2 ≤ 4
z ≥ 0

The region you're describing is the solid upper hemisphere of a sphere with radius 2, centered at the origin. We'll use inequalities to define this region.

Let's use (x, y, z) to represent a point in the 3-dimensional space. The sphere centered at the origin with radius 2 can be described by the equation:

x^2 + y^2 + z^2 = 2^2

Since we're interested in the upper hemisphere, we want to include only the points where the z-coordinate is non-negative. Therefore, we have the inequality:

z ≥ 0

Combining the sphere equation and the inequality for the upper hemisphere, we get the inequalities:

x^2 + y^2 + z^2 ≤ 4
z ≥ 0

These inequalities describe the region of the solid upper hemisphere of the sphere with radius 2, centered at the origin.

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Using Xbar/s charts, we can analyze the data to determine if any of the indicated events influenced the part weights. The tolerances for weight are 460 to 500 grams, and the goal quality level is 100 NCPPM.

Looking at the Xbar chart, we can see that there is a slight increase in the average weight of the plastic parts after Subgroup 6, where a new batch of raw material was started. This increase in average weight continues until Subgroup 11, where it reaches a peak. After that, the average weight begins to decrease, suggesting that the new batch of raw material may have had an effect on the process.

We can also see a significant increase in the average weight of the plastic parts after Subgroup 12, where the operator was replaced by an inexperienced operator. This increase continues until Subgroup 18, where it reaches a peak. After that, the average weight begins to decrease again, suggesting that the inexperienced operator may have had an effect on the process.

Finally, we can see a significant increase in the average weight of the plastic parts after Subgroup 20, where the normal weighing scale was borrowed and replaced temporarily with an older scale. This increase continues until Subgroup 24, where it reaches a peak. After that, the average weight begins to decrease again, suggesting that the older scale may have had an effect on the process.

Looking at the s chart, we can see that there is a slight increase in the variability of the weight of the plastic parts after Subgroup 12, where the operator was replaced by an inexperienced operator. This increase continues until Subgroup 18, where it reaches a peak. After that, the variability begins to decrease again, suggesting that the inexperienced operator may have had an effect on the process.

In conclusion, all three indicated events (starting a new batch of raw material, replacing the operator with an inexperienced operator, and borrowing an older weighing scale) had an effect on the weight of the plastic parts created in the blow molding operation. The new batch of raw material and the inexperienced operator both led to an increase in the average weight of the parts, while borrowing the older scale led to an increase in both the average weight and the variability of the parts.

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Answer:

8,911,248

Step-by-step explanation:

8,923,283 - 12,035 = 8,911,248

When the intention is to show the relationship between time spent working out per week and average amount of sleep an individual gets per week, a scatter plot can be a helpful data visualization method. This type of graph uses two axes to plot data points that correspond to each variable.

In this case, the x-axis can represent time spent working out per week, while the y-axis can represent average amount of sleep an individual gets per week. Each data point will correspond to a specific individual and will be plotted based on the values of the two variables.

By using a scatter plot, it will be possible to identify any patterns or trends in the data. For example, it may become clear that individuals who spend more time working out tend to get more sleep per week. Alternatively, it may be evident that there is no relationship between the two variables, which can be equally informative.

Overall, using a scatter plot can help to visualize the relationship between time spent working out per week and average amount of sleep an individual gets per week. This can be useful in understanding the data and drawing conclusions about the relationship between these two variables.

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The total amount of lava on the ground at t = 2 seconds is 8/3 cubic kilometers.

Finding the the integration of L(t) with respect to t

∫[1,2] L(t) dt = ∫[1,2] (t^2 + 1/6) dt

= [t^3/3 + t/6] from 1 to 2

= [(2^3/3 + 2/6) - (1^3/3 + 1/6)]

= [8/3 + 1/3] - [1/3 + 1/6]

= 8/3

So the total amount of lava on the ground at t = 2 seconds is 8/3 cubic kilometers.

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Answer: Distance = 10.83

Step-by-step explanation:

Distance = √((3-(-3))^2 + (4-(-5))^2)

Distance = √(6^2 + 9^2)

Distance = √117

Distance = 10.83

For an F-test with three groups, the degrees of freedom for the numerator would be 2 (number of groups - 1), and the degrees of freedom for the denominator would be 27 (total number of participants - number of groups). In an F-test, the degrees of freedom for the numerator and denominator are determined by the number of groups and the total number of participants.

Degrees of freedom for the numerator (between-groups):
This is calculated by subtracting 1 from the number of groups.
In this case, you have 3 groups, so the numerator degrees of freedom = 3 - 1 = 2.

Degrees of freedom for the denominator (within-groups):
This is calculated by subtracting the number of groups from the total number of participants.
In this case, you have 3 groups with 10 participants each, so there are a total of 3 x 10 = 30 participants. The denominator degrees of freedom = 30 - 3 = 27.

So, for this F-test, there are 2 degrees of freedom for the numerator and 27 degrees of freedom for the denominator.

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Therefore, in either partial derivatives, we have u = 0 or v = 0.

The given information implies that two vectors u and v satisfy:

u * v = 0, where * denotes the dot product between vectors.

u X v = 0, where X denotes the cross product between vectors.

From the first equation, we know that the angle between u and v is either 90 degrees or 270 degrees. That is, u and v are orthogonal (perpendicular) to each other.

From the second equation, we know that the magnitude of the cross product u X v is equal to the product of the magnitudes of u and v multiplied by the sine of the angle between them. Since u and v are orthogonal, the angle between them is either 90 degrees or 270 degrees, which means that the sine of the angle is either 1 or -1. Therefore, we have:

|u X v| = |u| * |v| * sin(θ)

= 0

Since the magnitudes of u and v are non-negative, it follows that sin(θ) must be zero. This can only happen if the angle between u and v is either 0 degrees (i.e., u and v are parallel) or 180 degrees (i.e., u and v are anti-parallel).

In the case where u and v are parallel, we have:

u * v = |u| * |v| * cos(θ)

= |u|²

= 0

This implies that |u| = 0, which means that u = 0.

In the case where u and v are anti-parallel, we have:

u * v = |u| * |v| * cos(θ)

= -|u|²

= 0

This again implies that |u| = 0, which means that u = 0.

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For a large enough n (i.e., N≥n), any subset of [1, n] containing at least n/c elements must have three equally spaced numbers.

This is a classic problem in combinatorics known as the van der Waerden's theorem. The theorem states that for any positive integers k and c, there exists a positive integer N such that any subset of {1, 2, ..., N} with cardinality at least N/k contains an arithmetic progression of length k.

In the specific case you mentioned, we have k=3 and the set S has at least n/c elements. So, according to the van der Waerden's theorem, there exists a positive integer N such that any subset of {1, 2, ..., N} with cardinality at least N/3 contains a 3-term arithmetic progression.

Therefore, for a large enough n (i.e., N≥n), any subset of [1, n] containing at least n/c elements must have three equally spaced numbers.

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The equivalent expression of expression  [tex]\frac{\sqrt[5]{a^4} }{\sqrt[3]{a^2} }[/tex] is [tex]a^\frac{2}{15}[/tex]

The given expression is [tex]\frac{\sqrt[5]{a^4} }{\sqrt[3]{a^2} }[/tex]

This expression can be written as [tex]\frac{a^\frac{4}{5} }{a^\frac{2}{3} }[/tex]

From the property [tex]\frac{a^m}{a^n}=a^m^-^n[/tex]

So [tex]a^\frac{4}{5} ^-^\frac{2}{3}[/tex]

Take the LCM of fractions which is 15

[tex]a^\frac{12-10}{15}[/tex]

[tex]a^\frac{2}{15}[/tex]

Hence, the equivalent expression of expression  [tex]\frac{\sqrt[5]{a^4} }{\sqrt[3]{a^2} }[/tex] is [tex]a^\frac{2}{15}[/tex]

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The mean amount of coffee to be dispensed from the vending machine should be set to 11.918 ounces to allow for a 2% overfill.

To determine the mean amount of coffee to be dispensed from the vending machine, we need to use the normal distribution and the given information that the standard deviation is 0.04 ounce and we can allow the cup to overfill 2% of the time.

First, we need to find the z-score associated with the 2% overfill. Using a standard normal distribution table or calculator, we can find that the z-score is approximately 2.05.

Next, we can use the formula z = (x - μ) / σ, where z is the z-score, x is the value of the random variable (the amount of coffee dispensed), μ is the mean, and σ is the standard deviation.

Substituting the values we have, we get:

2.05 = (12 - μ) / 0.04

Solving for μ, we get:

μ = 12 - 2.05 * 0.04

μ = 11.918

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Answer: 4

Step-by-step explanation:

10+3+2+5+0=20

20/5=4

Answer:

The mean number of points your basketball team scored for all 5 games is 4 points per game.

Step-by-step explanation:

To find the mean or average number of points scored by the team for all 5 games, we need to add up the total number of points and then divide by the number of games played.

Total number of points scored in 5 games = 10 + 3 + 2 + 5 + 0 = 20

Mean number of points scored per game = Total number of points scored / Number of games played

= 20 points / 5 games

= 4 points

Therefore, the mean number of points your basketball team scored for all 5 games is 4 points per game.

Answer:

2 square meters

Step-by-step explanation:

90 centimeters = .9 meters

one side could be 5 and the other could be 40.

40+40+5+5= 90

40 x 5 = 200

remember, 1 meter= 100 centimeters, so it would be 2 meters

try that! Also, hope that helps!!

a) The 90% confidence interval for the population mean age of used cars for sale in Orange County is (6.655, 9.145) years., b)The interpretation of the 90% confidence interval is that we are 90% confident that the true population mean age of used cars for sale in Orange County falls within the range of 6.634 to 9.166 years.

(a) To find the 90% confidence interval for the population mean age of used cars for sale in Orange County, we can use the formula:

CI = x ± z*(σ/√n)

where CI is the confidence interval, x is the sample mean age (7.9 years), σ is the sample standard deviation (7.7 years), n is the sample size (100), and z is the critical value for a 90% confidence level.

Using a z-table or calculator, we can find that the z-value for a 90% confidence level is 1.645. Substituting these values into the formula, we get:

CI = 7.9 ± 1.645*(7.7/√100)

Simplifying, we get:

CI = 7.9 ± 1.245

Therefore, the 90% confidence interval for the population mean age of used cars for sale in Orange County is (6.655, 9.145) years.

(b) The interpretation of the confidence interval is that we are 90% confident that the true population mean age of used cars for sale in Orange County falls between 6.655 and 9.145 years. This means that if we were to take multiple samples of 100 used cars for sale in Orange County and calculate their confidence intervals, about 90% of those intervals would contain the true population mean age.

(a) To find the 90% confidence interval for the population mean age of used cars for sale in Orange County, we will use the following formula:

CI = x ± (Z * (s / √n))

Where CI is the confidence interval, x is the sample mean (7.9 years), Z is the critical value corresponding to the 90% confidence level (1.645), s is the sample standard deviation (7.7 years), and n is the sample size (100 used cars).

CI = 7.9 ± (1.645 * (7.7 / √100))
CI = 7.9 ± (1.645 * (7.7 / 10))
CI = 7.9 ± (1.645 * 0.77)
CI = 7.9 ± 1.266

The 90% confidence interval for the population mean age of used cars for sale in Orange County is (6.634, 9.166) years.

(b) The interpretation of the 90% confidence interval is that we are 90% confident that the true population mean age of used cars for sale in Orange County falls within the range of 6.634 to 9.166 years.

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No, it is not possible for both Ray and Kelsey to be correct. A third-degree polynomial function can have at most 3 zeros.

This is because the degree of a polynomial function represents the maximum number of times the function can change direction. Since a third-degree polynomial can change direction at most 3 times, it can have at most 3 zeros. As for the function g(x), there is no information provided on the list of possible functions for me to pick one. Please provide more information so I can assist you better.

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