The class had 7 tests, on which he scored 85, 93, 78, 90, 88, 97, and 88.
What is the mean?

Answers

Answer 1
According to my calculations it’s 88

Related Questions

George and Manuel had a roofing business George as owner of the materials received $3 for every $2 manual received on a job that paid $750 what amount did each receive​

Answers

Manuel received $187.50, and George received $562.50 for the job.

Let's break down the information provided:

The job paid a total of $750.

George received $3 for every $2 that Manuel received.

To determine the amounts George and Manuel received, we can set up a ratio based on their earnings.

Let's assume Manuel's earnings as the base amount:

George's earnings : Manuel's earnings = $3 : $2

We can set up the following equation to solve for Manuel's earnings:

(Manuel's earnings / Manuel's earnings) = ($2 / $2)

Since the ratio is equivalent, we can say:

George's earnings / Manuel's earnings = $3 / $2

To find the amount each person received, we'll assign a variable to Manuel's earnings. Let's call it "x."

Therefore, George's earnings can be represented as "3x."

According to the given information, their total earnings should sum up to $750:

x + 3x = $750

Combining like terms, we have:

4x = $750

To solve for x, we divide both sides by 4:

x = $750 / 4

x = $187.50

Now, we can determine the amounts each person received:

Manuel's earnings = x = $187.50

George's earnings = 3x = 3 * $187.50 = $562.50

Therefore, Manuel received $187.50, and George received $562.50 for the job.

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What means killogram?

Answers

Answer:

1,000 grams

noun. a unit of mass equal to 1,000 grams: the basic unit of mass in the International System of Units (SI). Up until 2019 the kilogram was defined as equal to the mass of an international prototype, a platinum-iridium cylinder kept in Sèvres, France.

is it possible to have 131 quests in a particular arrangement?​

Answers

Answer:

yes

Step-by-step explanation:

What are the minimum and maximum values of the function?

Answers

I think it’s A ……………..

There are 7 teachers going to the museum. There are 8 times as many students going as teachers. They will need 1 van for every 6 people.

Answers

The sentence with proper subject-verb agreement is the student as well as the teacher want to go to the museum. In this sentence, the subject is what we call a compound subject, meaning that the verb refers and agrees with more than just one singular word.

The compound subject is "student" and "teacher" and they are connected by "as well as", which functions as a coordinating conjunction would. That's why the verb should conjugate in its plural form.

Option A is incorrect because the structure inside parentheses is not related to the verb and does not influence its conjugation. Options C and D have a verb in the singular form for a compound subject - that would demand a plural conjugation.

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enter the number that belongs in the green box 4 29 10

Answers

Answer:

Set your calculator to degree mode.

x^2 = 4^2 + 10^2 - 2(4)(10)(cos 29°)

x^2 = 46.0304

x = 6.78

The number that belongs in the green box is 6.78.


The room is 20 feet by 25 feet. The walls are 8 feet tall. You will be painting all 4
walls, but not the ceiling.

The paint costs $13.98 per gallon and covers 400 square feet per gallon.

1. What are the dimensions of the 4 walls?

2. What is the total area to be covered? Show your computations here.

3. How many gallons of paint will you need? (remember each gallon covers 400 sq ft)

Answers

1) The dimensions of the 4 walls are:

Two walls are 20 feet long and 8 feet tall.

Two walls are 25 feet long and 8 feet tall.

2) Total area to be covered:

= 720 square feet.

3) You will need 1.8 gallons of paint to cover all four walls of the room.

Now, The dimensions of the 4 walls are:

Two walls are 20 feet long and 8 feet tall.

Two walls are 25 feet long and 8 feet tall.

And, The total area to be covered is:

For the two 20 feet long walls:

A = 20 feet x 8 feet

A = 160 square feet each.

And, For the two 25 feet long walls:

A = 25 feet x 8 feet

A = 200 square feet each.

Hence, Total area to be covered:

= (160 + 160 + 200 + 200) square feet

= 720 square feet.

For the number of gallons of paint needed, divide the total area to be covered by the area covered by one gallon of paint:

Number of gallons of paint needed = Total area to be covered / Area covered by one gallon of paint

Number of gallons of paint needed = 720 square feet / 400 square feet per gallon

Number of gallons of paint needed = 1.8 gallons

Therefore, you will need 1.8 gallons of paint to cover all four walls of the room.

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Find the mystery number from the following clues
It is a 2-digit number
It is a factor of 48
It is a multiple of 6
The sum of the digits is 3

Answers

Based on the given clues, the mystery number is 12.

Let's analyze the clues given to find the mystery number:

It is a 2-digit number: This means the number is greater than or equal to 10 and less than 100.

It is a factor of 48: The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48.

It is a multiple of 6: The multiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, and so on.

The sum of the digits is 3: From the clues, we know that the mystery number is a 2-digit number, so let's consider the possible numbers where the sum of the digits is 3:

12 (1 + 2 = 3)

21 (2 + 1 = 3)

Now let's check which of these numbers satisfy the first three clues:

12: This number is a factor of 48 (48 ÷ 12 = 4) and it is a multiple of 6 (12 ÷ 6 = 2). The sum of the digits is 3. Therefore, 12 satisfies all the clues.

21: This number is not a factor of 48 (48 ÷ 21 ≈ 2.29), so it doesn't satisfy the second clue.

Based on the given clues, the mystery number is 12.

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Learning Page
Computing expected value in a game of chance
QUESTION
Scott is playing a game in which he spins a spinner with 6 equal-sized slices numbered 1 through 6. The spinner stops on a numbered slice at random.
This game is this: Scott spins the spinner once. He wins $1 if the spinner stops on the number 1, $3 if the spinner stops on the number 2, $5 if the spinner
stops on the number 3, and $7 if the spinner stops on the number 4. He loses $1.25 if the spinner stops on 5 or 6.
(a) Find the expected value of playing the game.
dollars
(b) What can Scott expect in the long run, after playing the game many times?
Scott can expect to gain money.
He can expect to win dollars per spin.
Start
Scott can expect to lose money.
He can expect to lose dollars per spin.
Scott can expect to break even (neither gain nor lose money).
00 EXPLANATION
0 0/5

Answers

Answer:$0.25

Step-by-step explanation:

To find the expected value of playing the game, we need to multiply the payoff for each possible outcome by its probability and then add up all the values.

Let's first find the probabilities of each outcome:

- Probability of spinning1:1/6

- Probability of spinning2:1/6

- Probability of spinning3:1/6

- Probability of spinning4:1/6

- Probability of spinning5 or6:2/6( or1/3)

Now let's calculate the expected value:

Expected value=(1/6*$1)+(1/6*$3)+(1/6*$5)+(1/6*$7)+(1/3*-$1.25)

Expected value=$0.25

So the expected value of playing the game is$0.25 per spin.

In the long run, Scott can expect to gain money since the expected value is positive. However, this doesn't guarantee that he will actually win money every time he plays the game, as there is still a certain degree of randomness involved in each spin.

HELLLLPPPPP!!!!!!!!!!!! AHHHHHHHHHHH!!!!!!!

kenji is raising baby kittens. their weights after three weeks are 12 ounces, 14 ounces, 15 ounces, 15, ounces and 14 ounces, what is the mean weight of the kittens????

Answers

Answer: 14 ounces

Step-by-step explanation:

         To find the mean, we add up all the values and divide by the number of values.

[tex]\displaystyle \frac{12+14+15+15+14}{5} =\frac{70}{5} =14\;ounces[/tex]

Solve for x: 2(4-x)-3(x+3)=-11

Answers

Answer:

x=2

Step-by-step explanation:

I don’t really have an explanation, it was all mental math

Answer:

[tex]\sf x=2[/tex]

Step-by-step explanation:

[tex]\sf 2(4-x)-3(x+3)=-11[/tex]

Expand:-

[tex]\sf 2\left(4-x\right)-3\left(x+3\right)[/tex][tex]\sf 8-2x-3\left(x+3\right)[/tex][tex]\sf 8-2x-3x-9[/tex][tex]\sf -5x-1[/tex][tex]\sf -5x-1=-11[/tex]

Now, add 1 to both sides:-

[tex]\sf -5x-1+1=-11+1[/tex][tex]\sf -5x=-10[/tex]

Divide both sides by -5:-

[tex]\sf \cfrac{-5x}{-5}=\cfrac{-10}{-5}[/tex][tex]\sf x=2[/tex]

Therefore, the value of x is 2!

- - - - - - - - - - - - - - - - - - - - - -

Hope this helps!

Darren says that more students hands are 4 2/4 inches longer than 4 and 5 1/4 inches combined. is he right?Explain you're answer

Answers

In a case whereby Darren says that more students hands are 4 2/4 inches longer than 4 and 5 1/4 inches combined, he is wrong

What is the justification?

[tex]4\frac{2}{4}[/tex] that was given in the question can be seen as mixed fraction, we can expressed this as improper fraction so that it will be easier to handle.

[tex]4\frac{2}{4} = \frac{16+4}{2}[/tex]

=[tex]\frac{18}{4}[/tex]

Then [tex]4 + 5\frac{1}{4} = \frac{16}{4} +\frac{20+1}{4} \\\\=\frac{37}{4}[/tex]

Then after expressing the given fractions as improper fraction we can now compare them so that e will know may be Darren is right or wrong, then here we can see that [tex]\frac{18}{4}[/tex] is less than [tex]\frac{37}{4}[/tex] Hence, Darren is wrong.

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Need help with this equation 8x²+10x-3

Answers

Answer:

Step-by-step explanation:

You have to use the quadratic formula

x = -b +/- [tex]\sqrt{(b^{2} -4ac)/2a[/tex]

and then you can simplify both answers so the first one would be -13/2 and the second would be -27/2

you usually have to reject an answer but since there is no equal sign in the question, you should be fine

e-Test Active
2
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=+
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Of(x) = -3x+4
Of(x) = -x +
Of(v)=-3y+4
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TIME REI
Consider the function represented by 9x+3y=12 with x as the independent variable. How can this function be
written using function notation?
42-

Answers

The function notation of 9x + 3y = 12 is given as follows:

f(x) = 4 - 3x.

How to write the function notation?

The function in the context of this problem is given as follows:

9x + 3y = 12.

The format for the function notation is given as follows:

Hence we must isolate the variable y, as follows:

3y = 12 - 9x

y = 4 - 3x (each term of the expression is divided by 3).

f(x) = 4 - 3x.

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Simplify the rational expression
7x/14x^6

Answers

The simplified form of the rational expression is 1/(2[tex]x^5[/tex]).

To simplify the rational expression (7x)/(14[tex]x^6[/tex]), we can reduce the numerator and denominator by their greatest common factor.

In this case, the greatest common factor is 7x.

Dividing both the numerator and denominator by 7x, we get:

(7x)/(14[tex]x^6[/tex]) = (7x)/(7x × 2[tex]x^5[/tex])

Canceling out the common factor of 7x, we have:

= 1/(2[tex]x^5[/tex])

Therefore, the simplified form of the rational expression is 1/(2[tex]x^5[/tex]).

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Acylinder has a volume of 400 cubic feet. If the height of the cylinder is 25 feet, what is the radius of the cylinder? Use 3.14 for me and round to the nearest hundredth
adius hype your answer...
1

Answers

The radius of the cylinder is 2.25 feet.

To find the radius of the cylinder, we can use the formula for the volume of a cylinder:

V = πr²h

Given that the volume V is 400 cubic feet and the height h is 25 feet, we can substitute these values into the formula and solve for the radius r.

400 = 3.14 r² x 25

Dividing both sides of the equation by (3.14 * 25) to isolate r^2, we have:

r² = 400 / (3.14 x 25)

r² ≈ 5.08

Taking the square root of both sides to solve for r, we get:

r ≈ √5.08

r ≈ 2.25

Therefore, the radius of the cylinder is 2.25 feet.

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Joshua and Milap were having a contest flying
planes. Joshua's plane flew 125 feet. Milap's
plane flew 12 feet less than twice as far as
Joshua's. How far did Milap's plane fly?
A 137 feet
B 238 feet
C 250 feet
D 262 feet​

Answers

howdy!

i believe the answer is 238.

twice the feet is 250, ( 2 x 125)

his plane flew 12 feet less than that,

250 - 12 = 238

To solve the quadratic equation 3(x−7)2=27 , Diego and Mai wrote the following: Diego 3(x−7)2=27 (x−7)2=9 x2−72=92 x2−49=81 x2=130 x=130−−−√ and x=−130−−−√ Mai 3(x−7)2=27 (x−7)2=9 x−7=9 x=16 Identify the mistake(s) each student made. Solve the equation and show your reasoning.

Answers

Given statement solution is :- The correct solutions to the quadratic equation  [tex]3(x-7)^2 = 27[/tex]  are x = 10 and x = 4.

Diego made an error in the step where he simplified [tex](x-7)^2 = 9 to x^2[/tex] - 72 = 9. The correct expansion of [tex](x-7)^2 is x^2 - 14x + 49[/tex], not [tex]x^2 - 72.[/tex]Therefore, his subsequent steps and solution are incorrect.

Mai made an error in the step where she simplified [tex](x-7)^2 = 9[/tex] to x - 7 = 9. The square root of 9 is ±3, so the correct equation should be x - 7 = ±3, not x - 7 = 9. Therefore, her solution is incorrect.

To solve the equation correctly, we start with the equation [tex]3(x-7)^2 = 27.[/tex]

Dividing both sides by 3, we have:

[tex](x-7)^2 = 9[/tex]

Taking the square root of both sides, we get:

x - 7 = ±3

Now, we need to solve for x by adding 7 to both sides:

x = 7 ± 3

This gives us two possible solutions:

x = 7 + 3 = 10

x = 7 - 3 = 4

So, the correct solutions to the quadratic equation [tex]3(x-7)^2 = 27[/tex] are x = 10 and x = 4.

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11. Which one of the following is unique? b. mode a. Mean c. Median d. A and B​

Answers

Among the mean, mode, and median, the unique one is the b. mode.

What is the mode?

The mode is the data value that occurs many times more than other data values.

Unlike the mean that shows the average value of all the data values, the mode occurs more.  While we compute the mean by dividing the total data value by the number of data items, the mode is not computed but found as the most frequent data value.

Similarly, the median can be computed when two values occur as the middle values.

Thus, among the three measures of central tendency, the mean, the median, and the mode, the mode is the most unique since it is not computed.

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Susan has two solutions that contain alcohol. She uses 100 millileters less of solution a than solution b. Solution A HAS 13% ALCOHOL AND SOLUTION b is 10% alcohol. How many milliliters of solution b is used if the resulting mixture has 102 milliliters of pure alcohol

Answers

Susan uses 500 milliliters of solution b to obtain a resulting mixture with 102 milliliters of pure alcohol.

Let's set up the equation based on the given information.

Let x represent the amount of solution b in milliliters.

Since Susan uses 100 milliliters less of solution a than solution b, the amount of solution a is (x - 100) milliliters.

We know that solution a has a concentration of 13% alcohol, which means that for every 100 milliliters, it contains 13 milliliters of alcohol.

Similarly, solution b has a concentration of 10% alcohol, which means that for every 100 milliliters, it contains 10 milliliters of alcohol.

Given that the resulting mixture has 102 milliliters of pure alcohol, we can set up the equation:

0.13(x - 100) + 0.1x = 102

Simplifying the equation, we have:

0.13x - 13 + 0.1x = 102

0.23x - 13 = 102

0.23x = 115

x = 115 / 0.23

x = 500

Therefore, Susan uses 500 milliliters of solution b to obtain a resulting mixture with 102 milliliters of pure alcohol.

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A 3-quart jug of water costs $3.48. What is the price per cup?

Answers

The calculated value of the price per cup is $1.16

How to calculate the price per cup?

From the question, we have the following parameters that can be used in our computation:

A 3-quart jug of water costs $3.48

The price per cup is calculated as

Unit rate = Total cost/Size of the cup

Substitute the known values in the above equation, so, we have the following representation

Unit rate = 3.48/3

Evaluate

Unit rate = 1.16

Hence, the price per cup is $1.16

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pls help me with this

Answers

The term 9b represents the cost to rent a bike.

We have,

               Rentals

Bike                            $9/h

Electric scooter          $10/h

Kayak                          $18/h

Canoe                         $20/h

Paddleboard               $22/h

Helmet                        Add $6

Here, the term 9b represents the cost to rent a bike.

In the provided rental options, the cost of renting a bike is $9 per hour.

The term "9b" indicates that the cost is calculated by multiplying the hourly rate of $9 with the number of hours (b) the bike is rented for.

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What is the circumference of the circle if the radius is 10 cm?

Answers

C≈62.83c

Answer for this question

The circumference of the circle is 62.8cm.

The Circumference of the circle is given by the formula,

Circumference = 2*[tex]\pi[/tex]*r cm.........equation 1

Given, r = 10cm

On substituting the radius value in equation 1

Circumference = 2*[tex]\pi[/tex]*10

Circumference = 62.8 cm

Therefore, the circumference of the circle is 62.8cm.

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Fabrizio cut a square paper vertically to make two rectangle pieces. Each rectangle had a perimeter of 57 inches. How long is each side of the original square paper?

Answers

The length of each side of the original square paper is √812.25 = 28.5 inches.

Let us assume that the length and breadth of the square paper are 'a' and 'b' respectively. Now, Fabrizio cuts the paper vertically to make two rectangular pieces.

Since the paper is cut vertically, it can be assumed that the breadth of the square is equal to the height of the rectangle.

Therefore, the perimeter of one rectangle can be calculated by the formula P = 2l + 2wwhere l = length and w = widthNow, P = 57 inches.

Therefore, 2l + 2w = 572(l + w) = 57l + 57w = 28.5(2l + 2w)Since the paper is cut into two rectangles, the length of the square paper is divided equally into the two pieces.

Therefore, the length of the side of the original square paper can be calculated as follows:Length of one rectangle = l = 28.5Width of one rectangle = w = 57 - 28.5 = 28.5

Therefore, the breadth of the original square paper = width of one rectangle = 28.5 inches.

The area of the square can be calculated as length * breadthTherefore, the area of the square paper is given by a * b = 28.5 * 28.5 = 812.25 square inches.

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Use the data set below to answer the following questions. 20 26 28 25 28 18 23 15 17 26 29 24 29 29 17 15 17 20 30 29 16 21 22 28 19
Approximately what percent of the data are greater than 28?
Approximately what percent of the data are less than 23?
Approximately what percent of data are greater than 17.5?
Approximately what percent of data are between 17.5 and 28?

Answers

Approximately 37.5% of the data are greater than 28, 33.3% of the data are less than 23, 91.7% of the data are greater than 17.5, and 62.5% of the data are between 17.5 and 28.

To answer the questions, we can analyze the given data set.

First, let's count the number of data points that satisfy each condition:

Greater than 28:

There are 9 data points greater than 28 (29, 29, 29, 30, 29, 29, 28, 28, 28).

Less than 23:

There are 8 data points less than 23 (20, 18, 15, 17, 17, 15, 17, 19).

Greater than 17.5:

There are 22 data points greater than 17.5.

Between 17.5 and 28:

There are 15 data points between 17.5 and 28.

Now, let's calculate the approximate percentage for each condition:

Percent greater than 28:

The total number of data points is 24. Approximately, 9 out of 24 data points are greater than 28.

Percentage =[tex](9 / 24) \times 100 = 37.5[/tex]%.

Percent less than 23:

Approximately, 8 out of 24 data points are less than 23.

Percentage = [tex](8 / 24) \times 100 = 33.3[/tex]%.

Percent greater than 17.5:

Approximately, 22 out of 24 data points are greater than 17.5.

Percentage = [tex](22 / 24) \times 100 = 91.7[/tex]%.

Percent between 17.5 and 28:

Approximately, 15 out of 24 data points are between 17.5 and 28.

Percentage = [tex](15 / 24) \times 100 = 62.5[/tex]%.

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what is the probability that either event will occur? ASAP

Answers

The probability that either event will occur is 0.67

What is the probability that either event will occur?

From the question, we have the following parameters that can be used in our computation:

Event A = 3

Event B = 1

Other Events = 2

Using the above as a guide, we have the following:

Total = A + B + C

So, we have

Total = 3 + 1 + 2

Evaluate

Total = 6

So, we have

P(A) = 3/6

P(B) = 1/6

For either events, we have

P(A or B) = 3/6 + 1/6 = 0.67

Hence, the probability that either event will occur is 0.67

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Name the quadrant in which angle 0
must lie for the following to be true.
cos > 0 and
tan 0 <0
Enter a, b, c, d, or e.
a. l
b. ll
c. III
d. IV
e. All of the above.

Answers

Answer:

D is the correct answer

Step-by-step explanation:

Acellus

Find the exact value of cos (-n/12)

Answers

The exact value of cos(-n/12) is equal to cos(n/12).

The cosine function (or cos function) in a triangle is the ratio of the adjacent side to that of the hypotenuse.

The value of cosine function is periodic with a period of 2π. Therefore, we can use the property cos(x) = cos(x + 2πk) for any integer value of k.

In this case, we have cos(-n/12). To find the exact value, we can use the fact that cos(x) = cos(-x) for any angle x. Therefore, we can rewrite cos(-n/12) as cos(n/12).

So, the exact value of cos(-n/12) is equal to cos(n/12).

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The length of a rectangle is four times its width. If the perimeter of the rectangle is 180 ft, find its area

Answers

The area of the rectangle is 1296 square feet.

Let's denote the width of the rectangle as "w" and its length as "4w" since the length is four times the width.

The formula for the perimeter of a rectangle is given by:

P = 2(l + w), where P is the perimeter, l is the length, and w is the width.

Given that the perimeter of the rectangle is 180 ft, we can write the equation as:

180 = 2(4w + w)

Simplifying the equation:

180 = 2(5w)

180 = 10w

w = 18

So, the width of the rectangle is 18 ft.

Now, we can find the length of the rectangle:

Length = 4w = 4(18) = 72 ft

The area of a rectangle is given by the formula:

[tex]A = l \times w,[/tex]

where A is the area,

l is the length,

and w is the width.

Substituting the values we found:

Area [tex]= 72 ft \times 18 ft = 1296 ft^2[/tex]

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Pls help
This other expression is equal to

Answers

D. (4x^2 - x + 2)

reasoning:
coefficients (the # in front of the variable) gets divided by the 3, and the exponents essentially just get subtracted.

12x^4 divided by 3x^2 (divide 12 by 3 and subtract the exponents to reach 4x^2)

same for -3x^2 divided by 3x^2 (since these terms are the almost same, you would just end up with -1)

6x^2 divided by 3x^2 (divide 6 by 3 which equals two, and subtract the exponents. that leave you with just 2 since 2-2 = 0 for the exponents)

place it together back in standard form

4x^2 - x + 2
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The data listed in Birth Data come from a random sample of births at a particular hospital. The variables recorded are o AGE of Mother-the age of the mother (in years) at the time of delivery o RACE-the race of the mother (White, black, other) o SMOKING-whether the mother smoked cigarettes or not throughout the pregnancy (smoking, no smoking) o BWT - the birth weight of the baby (in grams) Determine the equation of a curve, such that at each point (x, y) on the curve, the slope equals twice the square of the distance between the point and the y-axis and the point (-1,2) is on the curve. | 23 25 0 The value of the determinant 31 32 0 is 42 47 01 O o O 25 O 23 O None of these According to ordinal utilitarianism, the perfect gift to givesomeone would be a "cash". Would you agree or disagree with thestatement? Explain.What are the shortcomings of randomized clinical t purchase: Discounts Wages and salaries Advertising Insurance Transport on sales Interest on 13% Bonds Salesmen commission Rent and rates Electricity Directors' Remuneration Repairs and maintenance Int Description Write down how do you think "staitistics" is important to you in the future as a civil engineer in 2-3 pages of A4-sized pape Over the past several decades, the economies of the world have become more financially integrated. That is, investors in all nations have become more willing and able to take advantage of financial opportunities abroad. Consider how this devel- opment affects the ability of monetary policy to influence the economy. Illustrate the answers to the following questions using the open economy IS/LM diagram. (a) investors become more willing and able to substitute foreign and domestic assets, what happens to the slope of the CF function? 1 (b) If the CF function changes in this way, what happens to the slope of the IS curve? (c) How does this change in the IS curve affect the Fed's ability to control the interest rate? (d) How does this change in the IS curve affect the Fed's ability to control national income? Konnikova writes, "It's not always easy to be both interesting and accurate, but, as Ecker's study shows, it's better than being exciting and wrong." Apply this to what the article is trying to say about headlines. 1. Let KCF be a field extension. Show the following. (a) [F: K] = 1 if and only if F = K. (b) If [F: K] = 2, then there exists u F such that F = K(u). fill in the blank. Pain after surgery: In a random sample of 59 patients undergoing a standard surgical procedure, 17 required medication for postoperative pain. In a random sample of 81 patients undergoing a new procedure, only 20 required pain medication Part: 0/2 Part 1 of 2 (a) Construct a 99% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Let i denote the proportion of patients who had the old procedure needing pain medication and let P, denote the proportion of patients who had the new procedure needing pain medication. Use the 71-84 Plus calculator and round the answers to three decimal places. A 99% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures is < P1 -P2 3. Let Y, , Yn denote a random sample from the pdf f(y|a) = { ay-1/3, 0 y 3, 0 elsewhere. Show that E(Y) = 3a/(a + 1) and derive the method of moments estimator for a. The damage from war is one of the excluded perils from a typicalhomeowners insurance policy.TRUEFALSE 7. Determine whether each of the following is a linear transformation. Prove/justify your conclusion![X1a. Ta: [x2]X2>>-3x2[X1b. Tb: [X2x1 +>>>[x2 - 1 What would happen if the government of a country started usingprice ceiling for all universities? The initial investment for the project is $250,000, and the project will continue for seven years, and the following Cash flows will be generated. The cash flows are reported below. The firm also reported the following information. Assume that the company generates a revenue of $300,000 for the first year, and it is subject to grow at a rate of 5 percent for the investment period. The first-year expense is $200,000 and is subject to increase by 7 percent every year. This company uses straight- line depreciation, and the useful life for the Investment is eight years. The company is also subject to a 40% tax rate. YearsCash Flows1 41,0002 48,0003 63,0004 79,0005 88,0006 64,0007 41,000 1 f(x) = 5(1+x) g(x) = 11x2 (a) Use a graphing utility to graph the region bounded by the graphs of the functions. y X - 3 -2 -1 1 2 -2 -1 -0.05- X-0.10 0.15 -0.20 -0.25 -0.30 y 0.30 0.25 0.20 0.1 This strategy talks about intermediaries and the number ofintermediaries to use. the first-order rate constant for the decomposition of n2o5, 2n2o5(g)4no2(g) o2(g) at 70c is 6.82103 s1. suppose we start with 2.00102 mol of n2o5(g) in a volume of 1.6 l. Part AHow many moles of N2O5will remain after 7.0 min ?Express the amount in moles to two significant digits.Part BHow many minutes will it take for the quantity of N2O5to drop to 1.6x10^-2mol ?Express your answer using two significant figures.Part CWhat is the half-life of at 70 degree Celsius? Decide whether the following statement is TRUE or FALSE. If TRUE, give a short explanation. If FALSE, provide an example where it does not hold. (a) (4 points) Let A be the reduced row echelon form of the augmented matrix for a system of linear equation. If A has a row of zeros, then the linear system must have infinitely many solutions. (b) (4 points) f there is a free variable in the row-reduced matrix, there are infinitely many solutions to the system. Write the equation in standard form for the circle with center (8, 1) and radius 3 10.