Compute the estimated regression's prediction for the average score of students given 98, 129, or 159 minutes to complete the exam.
Given 98 minutes, the estimated regression's prediction for the average score of students is 91.94 .
Given 129 minutes, the estimated regression's prediction for the average score of students is 108.37
Given 159 minutes, the estimated regression's prediction for the average score of students is 124.27 (Round your responses to two decimal places.)
Compute the estimated gain in score for a student who is given an additional 32 minutes on the exam.
The estimated gain in score for a student who is given an additional 32 minutes on the exam is (Round your response to two decimal places.)

Answers

Answer 1

Answer:

The estimated gain in score for a student who is given an additional 32 minutes on the exam is 16.96

Step-by-step explanation:

The estimated regression prediction is given by:

[tex]\hat{y}=40+0.53x[/tex]

Where x denotes the time

y denotes the average score

A)

Substitute x = 98

[tex]\hat{y}=40+0.53(98) = 91.94[/tex]

B)

Substitute x = 129

[tex]\hat{y}=40+0.53(129) = 108.37[/tex]

C)

Substitute x = 159

[tex]\hat{y}=40+0.53(159) = 124.27[/tex]

D)the estimated gain in score for a student who is given an additional 32 minutes on the exam.

[tex]\hat{y}=40+0.53(x+32)=40+0.53x+9.57=y+16.96[/tex]

So, the estimated gain in score for a student who is given an additional 32 minutes on the exam is 16.96


Related Questions

What is the slope of the line that passes through the points (1, 1) and (7, 5)?

Answers

Answer:

The slope of the line is

[tex] \frac{2}{3} [/tex]

Round the numbers to the highest place value.

2 398-
56 254-
71 563-
33 021-
9 645-​

Answers

Answer:

[tex]2398 = 2000[/tex]

[tex]56254 = 60000[/tex]

[tex]71563 = 70000[/tex]

[tex]33021 = 30000[/tex]

[tex]9645 = 10000[/tex]

Step-by-step explanation:

Given

[tex]2398[/tex]

[tex]56254[/tex]

[tex]71563[/tex]

[tex]33021[/tex]

[tex]9645[/tex]

Required

Round up to highest place value​

[tex]2398[/tex]

Highest place value here is thousand.

So:

[tex]2398 = 2000[/tex], when approximated

[tex]56254[/tex]

Highest place value here is ten thousand.

So:

[tex]56254 = 60000[/tex], when approximated

[tex]71563[/tex]

Highest place value here is ten thousand.

So:

[tex]71563 = 70000[/tex] when approximated

[tex]33021[/tex]

Highest place value here is ten thousand.

So:

[tex]33021 = 30000[/tex] when approximated

[tex]9645[/tex]

Highest place value here is ten thousand.

So:

[tex]9645 = 10000[/tex] when approximated

6 divided by the sum of x and 4 equals the quotient of 2 and the difference of x and 4

Answers

Answer:

6

Step-by-step explanation:

k bik k,k h

6/(x+4) = 2/(x-4)

if solving x=8

Automated electron backscattered diffraction is now being used in the study of fracture phenomena. The following information is on misorientation angle (degrees).
Class: 0−<5 5−<10 10−<15 15−<20 20−<30 30−<40 40−<60 60−<90
Rel freq: 0.179 0.168 0.174 0.135 0.193 0.071 0.051 0.029
Is it true that more than 50% of the sampled angles are smaller than 15°, as asserted by researchers?
A. Yes, the proportion of sampled angles smaller than 15° is greater than 0.50.
B. Yes, the proportion of sampled angles smaller than 15° is not greater than 0.50.
C. No, the proportion of sampled angles smaller than 15° is greater than 0.50.
D. No, the proportion of sampled angles smaller than 15° is not greater than 0.50.

Answers

Answer: A. Yes, the proportion of sampled angles smaller than 15° is greater than 0.50.

Step-by-step explanation:

Given the data :

Class: _______ relative frequency

0−<5 __________ 0.179

5−<10 __________ 0.168

10−<15 _________ 0.174

15−<20 _________ 0.135

20−<30 _________0.193

30−<40 _________ 0.071

40−<60 _________ 0.051

60−<90 _________ 0.029

Evaluating the proportion of sampled angles less than 15°. This consist of the following classes :

Class: ________frequency

0−<5 __________ 0.179

5−<10 __________ 0.168

10−<15 _________ 0.174

Summing up the relative frequency values :

(0.179 + 0.168 + 0.174) = 0.521

0.521 * 100% = 52.1%

Hence, more than 50% of the sampled angles are smaller than 15°

Express each ratio as a fraction in the simplest form. 12 pennies to 24 pennies

Answers

Answer: 1:2

Step-by-step explanation:

24 ÷ 12 = 2

12 ÷ 12 = 1

Answer to the question is 1:2

MY TEACHER TEXTED ME THIS IDK WHAT TO EVEN DO:( help i luv u

Answers

Answer:

yea

same

Step-by-step explanation:

Answer:

well i hope you can figure it out

Step-by-step explanation:

Someone, please help me.

Answers

I believe the answer would be four since the right and left side are symmetrical, same as the top and bottom

I am 15 years old right now. How many years until i turn 18 years old?? I was born on May 9, 2005. If yoi answer this one i will give you brainly

Answers

you are 15 and you were born in the middle of generation z , you have 3 years left to go

find each sum.
17+(-28
12+(-9)
-2+7
-14+(-10)
-9+(-2)

Answers

Answer:

-2834

Step-by-step explanation:

thats the answer

4/5 of the cake was left, but after Brian ate some only 1/4 of the cake was left. Which fraction of the cake did Brian eat?

Answers

Answer:

3/4

Step-by-step explanation:

there was 4/5 you just had to minis 3and 4

Choose the SIMPLIFIED fraction that accurately represents the repeating decimal. (Each of these)

1. 0.333
2.0.454545
3.0.353535
4.242424
5.0.393939

Answers

Answer:

1) 1/3

2) 45/99

3) 35/99

4) 24/99

5) 39/99

Explanation:

1) 0.333 = 0.333/1 = 0.999/3 ≈ 1/3

2) 0.454545 ; 100x ≈ 45.45 ; x ≈ 0.45 ; 45.45-.45 = 45 ; 100x-x = 99 ; x = 45/99

3) 0.354535 ; 100x ≈ 35.35 ; x ≈ 0.35 ; 35.35-.35= 35; 100x-x = 99x ; x = 35/99

4) 0.242424 ; 100x ≈ 24.24 ; x ≈ 0.24 ; 24.24-.24 = 24 ; 100x-x = 99x ; x = 24/99

5) 0.393939 ; 100x ≈ 39.39 ; x ≈ 0.39 ; 24.24-.24 = 24 ; 100x-x = 99x ; x = 39/99

Solve the system of equations 2x-4y=-2 and -x+8y=-23 by combining the equations.

Answers

Answer:

(−9,−4)

Step-by-step explanation:

What is the correct sum of 2.34 and 128.8

Answers

Answer:

131.14

Step-by-step explanation:

Hope this helps!! Good luck!!

Answer:

131.14

Step-by-step explanation:

2.34 + 128.8 = 131.14

simply in ratio 20:80

Answers

Answer:

I think the answers could range in anything that are GCF including 2:8

Step-by-step explanation:

If I had 50 magmortars and I got one shiny magmortar, how much would i have now???

Answers

Answer:

51 Magmortars!!!

Step-by-step explanation:

Hope this helps!!!

Answer:

you have 51

Step-by-step explanation:

if you have 50 and you get 1 more then your adding so you would do this

50+1=51

I need a few help on these questions...

Answers

Look it up on google

Gina read 120 pages in 4 days. Which reading rate is equivalent?

Answers

Answer:

Gina reads 30 pages per day.

Step-by-step explanation:

120 / 4 = 30

I hate to ask, but please give me Brainliest. I need it to level up <3.

Answer:

Gina reads 30 pages per day.

Step-by-step explanation:

Mark walked 12 1/2 miles in 5 hours. How many miles did Mark walk in 1 hour?

Answers

the answe is it is 2.5 or 2 1/2 as he said but in conclusion answe 2 1/2 or 2 and 1 half

Distance can be defined as how far a person or an object can go or cover.

The number of miles Mark walked in 1 hour is [tex]2\frac{1}{2}[/tex]  miles

From the question,

In 5 hours, Mark walked a distance of 12 1/2 miles.

Hence,

5 hours = [tex]12\frac{1}{2}[/tex]  miles

1 hour = ?

Cross Multiply

1 hour x [tex]12\frac{1}{2}[/tex]  miles / 5 hours

= [tex]2\frac{1}{2}[/tex] miles

The number of miles Mark walked in 1 hour is  [tex]2\frac{1}{2}[/tex] miles

To learn more, visit the link below:

https://brainly.com/question/8805976

to bake 100 of his favorite cookies, Mr.Wallis needs 350 grams of sugar. How many grams of sugar would he need to bake 10 cookies?​

Answers

answer:35 grams

explication: because if he need 350 grams of sugar to make 100 cookies , we have to divide 350 by 100 so it gives 35

The number of grams of sugar would he need to bake 10 cookies will be 35 grams.

What are ratio and proportion?

A ratio is a collection of ordered integers a and b represented as a/b, with b never equaling zero. A proportionate expression is one in which two items are equal.

To bake 100 of his favorite cookies, Mr.Wallis needs 350 grams of sugar.

Let x be the amount of sugar for 10 cookies.

The number of grams of sugar would he need to bake 10 cookies will be

x / 10 = 350 / 100

x / 10 = 3.5

x = 35 grams

The number of grams of sugar would he need to bake 10 cookies will be 35 grams.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

#SPJ2

Solve the equation p=2q + 2w for q.

Answers

Answer:

q =  1 /2 p − w

Step-by-step explanation:

angle 4 and angle 5 are ??? angles will mark brainiest ​

Answers

Answer:

Alternate interior

Step-by-step explanation:

They are inside making them interior angles and they are on opposite sides making them alternate angles as well.

Hope this helps!

Answer:

alternate interior

Step-by-step explanation:

alternate interior angles are congruent if and only lines are parallel.

∠4 ≅ ∠5

At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.

Find the solution of the system of equations. Explain or show your reasoning
{x+y=4.25} ; {16.90x+4y=36.35}

Answers

Answer:

The number of yards of silk = x = 1.5 yards

The number of yards of cotton = y = 2.75yards

Step-by-step explanation:

At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.

Find the solution of the system of equations. Explain or show your reasoning

{x+y=4.25} ; {16.90x+4y=36.35}

Let the number of yards of silk = x

The number of yards of cotton = y

We are given the system of equations:

{x+y=4.25} ......Equation 1

x = 4.25 - y

{16.90x+4y=36.35}....... Equation 2

4.25 - y for x in Equation 2

16.90(4.25 - y) + 4y = 36.35

71.825 - 16.90y + 4y = 36.35

71.825 - 36.35 = 16.90 - 4y

35.475 = 12.90y

y = 35.475/12.90

y = 2.75 yards.

The number of yards of cotton = y

{x+y=4.25} ......Equation 1

x = 4.25 - y

x = 4.25 - 2.75

x = 1.5 yards

The number of yards of silk = x = 1.5 yards

The yards of silk bought is  1.49 yards and the yard of cotton bought is 2.76 yards.

The two equations are known as simultaneous equation. They would be solved using elimination method.

x + y  = 4.25 equation 1

16.90x + 4y = 36.25 equation 2

where:

x = yards of silk bought

y = yards of cotton bought

In order to determine the value of x, multiply equation 1 by 4.

4x + 4y = 17 equation 3

Subtract equation 3 from 2

19.25 = 12.90x

Divide both sides of the equation by 12.90

x = 1.49 yards

In order to determine the value of y, substitute for x in equation 1

1.49 + y = 4.25

y = 4.25 - 1.49

y = 2.76 yards

To learn more about simultaneous equations, please check: brainly.com/question/23589883?referrer=searchResults

please help ??? Thanks ​

Answers

It is top left ok try it

Answer:

Each y- value is determined by adding 4

Step-by-step explanation:

In each case below, we describe a study to determine whether exercise helps increase certain mood enhancing chemicals in the brain. Indicate whether each describes an experiment or an observational study.
a). Using a random sample of 100 people, we randomly assign half of them to participate in a regular exercise program for a six-week period while the other half makes no changes. At the end of the time period, we measure the brain chemicals.
b). We contact a random sample of 100 people and record how much each person exercises and also measure the chemicals in the brain for each person.

Answers

Answer:

A)Experimental Study

B)Observational Study

Step-by-step explanation:

Observational Study : A study where researchers simply collect data based on what is seen and heard and infer based on the data collected.

Experimental Study: A study which involve the random assignment of -participants into different groups in order to determine the causal effect of a certain condition on a certain outcome .

A) In this case we are randomly classifying the subjects into two groups, where one group participate in a regular exercise program for a six week period, while the other half makes no changes. In this Part we are not observing the data . we are doing experiment over here and comparing those two different groups.

So, By definition It is an experimental study

B) In this case we are recording the data of each person and decision will be based on data

So, By definition It is an observational study

I need help with this question

Answers

(-1,-5) is the answer

Find the slope of the line through the pair of points: (6,12) and (-6, -2)

Answers

Answer: The answer would be 1

Step-by-step explanation:

Rise over run or fall over run so the fall is 10 and run is 10 and 10/10 is 1.

I agree with the person above

How many subsets of 5 e elements can be made from a set of 7 elements?

Answers

Answer:

seems like this.

Step-by-step explanation:

From set theory, the factorial combinations are 2^N where N are the number of induvidual mambers of the set and that includes the null set. If we require that one element be the minimum to form a set, this eliminates the empty set (and there is only one empty set) so we must subtract one from the formula. The correct answer is therefore 2^N-1. In this case that is 2^5–1 = 31.

In the diagram below, lines x and y are parallel. What is the relationship between angle b and e? Write an equation if it help

Answers

Answer:

there is no relationship between the two angles if E switched with D then id say corresponding but theres not

Whats 9 plus 10 ...................................................................

Answers

Answer:

9 plus 10 is 19

Step-by-step explanation:

I wish you mean that.

Answer:

21 ;) lol

nah if you serious then 19.

Check all true statements.
A. For all nonempty sets A, B, C, D, if A x B = C x D, then A = C and B = D.
B. For all sets A, B, the power set of the cartesian product of A and B is the cartesian product of the power sets of A and B. If A={1,2} and B={3} then A x B ={ {1,3}, {2,3} }.
C. The cartesian product has a cancellation property, i.e. if A x B = A x C for some sets A, B, C and A nonempty, then B = C. If A={1,2} and B={3} then A x B ={ (1,3), (2,3) }.
D. The cartesian product is symmetric, i.e. A x B = B x A for all sets A, B. For all sets A, B, the cardinality of A x B is the sum of the cardinalities of A and B.
E. The cartesian product is associative, i.e. (A x B) x C = A x (B x C) =for all sets A, B, C. Both sets are equal to A x B x C.
F. The cartesian product has a cancellation property, i.e. if A x B = A x C for some sets A, B, C, then B = C.

Answers

Step-by-step explanation:

the true statemnts underneath and are in bold letters

-.For all nonempty sets A, B, C, D, if A x B = C x D, then A = C and B = D.

This property is true

-The cartesian product has a cancellation property, i.e. if A x B = A x C for some sets A, B, C and A nonempty, then B = C.

This property is true

- If A={1,2} and B={3} then A x B ={ (1,3), (2,3) }.

if we have 2 non empty sets a and b if we want to get their cartesian product, it is defined as the set of all ordered pairs from a and b

we have A x B to be{(1,3)(2,3)}

therefore this is also true

Other Questions
Write an informal letter to a friend apologising for not attending his/her birthday party. Write 150-200 words When Mike adjusted his bicycle, I thought I was watching a chess game. He would stare at a part for a while before he acted. Then we would wait for his opponent's response. For example, he stared for ten minutes before tightening the rear sprockets. Then he rode the bike for a minute, analyzing the change in the bike's performance. Suppose m is the line with equation y = 4 and A'B'C is mapped to A"B"C" by applying the glide reflection T3, 0 Rm.What are the coordinates of ABC? What are TWO ways that species are becoming endangered due to human behaviors? VitaLive has authorized the development of a video game based on new technology. Which of the following is an example of a risk that has to be accepted because it cannot be mitigated? All covalent compounds donot exist as giant aggregates. Why? Which word match the long vowel sound to bride and shaveAimTypePreyGrind How did technology make WWI different from previous conflicts?Technology meant that generals were able to control the fighting fullyB) The destructive nature of the new weapons meant that war was over quicklyC) Technology meant less men were required to fight in the warD) The destructive technology meant more casualties of war What do the Plains and Gulf Coast cultures have in common?A. They hunted buffalb as their main source of foodB. They both migratedC. They were fishermen and farmersD. They were sedentaryPlease help Which of the following best describes how Congress would be designed, according to the Great Compromise? (1 point) aThere would be one house called a Congress, and each state would be represented by a number of delegates based on the state's population including men, women, and slaves. bThere would be one house called a Congress, and each state would be represented by the same number of delegates regardless of the population. cThere would be two houses: an upper Senate, in which each state would be represented by two senators, and a lower House of Representatives, in which each state would be represented by three delegates. dThere would be two houses: an upper Senate, in which each state would be represented by two senators, and a lower House of Representatives, in which the number of delegates would be based on state population. The following unadjusted trial balance is prepared at fiscal year-end for Nelson Company. Nelson company uses a perpetual inventory system. It categorizes the following accounts as selling expenses: Depreciation ExpenseStore Equipment, Sales Salaries Expense, Rent ExpenseSelling Space, Store Supplies Expense, and Advertising Expense. It categorizes the remaining expenses as general and administrative.NELSON COMPANY Unadjusted Trial Balance January 31 Debit CreditCash $22,150 Merchandise inventory 13,000 Store supplies 5,100 Prepaid insurance 2,800 Store equipment 42,800 Accumulated depreciationStore equipment $19,250Accounts payable 17,000Common stock 4,000Retained earnings 25,000Dividends 2,100 Sales 115,900Sales discounts 2,100 Sales returns and allowances 2,000 Cost of goods sold 38,000 Depreciation expenseStore equipment 0 Sales salaries expense 12,900 Office salaries expense 12,900 Insurance expense 0 Rent expenseSelling space 8,000 Rent expenseOffice space 8,000 Store supplies expense 0 Advertising expense 9,300 Totals $181,150 $181,150Additional Information:a. Store supplies still available at fiscal year-end amount to $2,550. b. Expired insurance, an administrative expense, for the fiscal year is $1,720. c. Depreciation expense on store equipment, a selling expense, is $6,500 for the fiscal year. d. To estimate shrinkage, a physical count of ending merchandise inventory is taken. It shows $10,720 of inventory is still available at fiscal year-end. Required:a. Compute the current ratios as of January 31, 2017. b. Prepare a multiple-step income statement for the year ended January 31.c. Prepare a single-step income statement for the year ended January 31. Can somebody help me !! If annualized interest in the U.S. and France are 9% and 13%, respectively, and the spot value of the French franc is $0.1109, then at what 180-day forward rate will interest rate parity hold I WILL GIVE BRAINLIEST!!!!What rights did noble women have in feudal society? What were their main duties?How did the treatment of women change in the 12th century? The domain of the function f(x)=3x is restricted to the negative integers. Which values are elements of the range? What are both of these shaded as? Pls answer quick, Ill give brainliest! What were the advantages that the colonists had in the American Revolution over the British troops? Harriets goal is to weigh no more than 140 pounds. If x represents weight, write and inequality that describes her goal weight. How did a series of weak emperors affect the Han dynasty? O Foreign powers were able to take control of large areas. O Rivalries between powerful landowners divided the empire. O Multiple heirs of the emperors created competition for the throne. O Local leaders used bribery to gain power to challenge the throne.