An engineer wants to determine how the weight of a​ gas-powered car,​ x, affects gas​ mileage, y. The accompanying data represent the weights of various domestic cars and their miles per gallon in the city for the most recent model year. Complete parts​ (a) through​ (d) below. Weight (pounds), x Miles per Gallon, y 3773 17 3793 16 2706 25 3645 20 3308 22 2908 24 3675 17 2687 24 3522 18 3827 16 a) Find the​ least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable y= x+( ) A certain​ gas-powered car weighs 3511 pounds and gets 18 miles per gallon. Is the miles per gallon of this car above average or below average for cars of this​ weight? ​The estimated average miles per gallon for cars of this weight is ( ) miles per gallon. The miles per gallon of this car is average for cars of this weight.

Answers

Answer 1

Answer:

y= 0.007x- 4.945

The estimated average miles per gallon for cars of this weight is (20.829 or 21 ) miles per gallon.

The miles per gallon of this car below (18 < 20.829) the average for cars of this weight.

Step-by-step explanation:

Weight                   Miles              

(pounds), x    per Gallon,   y             xy

3773                       17                     64,141

3793                       16                     60,688    

2706                      25                    67,650

3645                       20                  72,900

3308                         22                 72,776

2908                        24                   69,792

3675                         17                    62,745  

2687                        24                   64,488

3522                        18                     63,396

3827                        16                      61,232

∑y²=4075; ∑y=199;    ∑x²= 116,406,174 ; ∑x=33,844 ;  ∑xy=659,808

b= n∑XY - (∑X)(∑Y)/ n∑X² - (∑X)²

b=(10) (659,808) - (33,844)(199)/ 10 (116,406,174) - 1,145,416,336

b=6,598,080- 6,734,956/ 1,164,061,740 -1,145,416,336

b=136,876/18,645,404

b= 0.007341

a= Y`- bX`

a= 19.9- (0.007341) (3384.4)

a= 19.9 -24.845

a=-4.945

Y^= -4.945+ ( 0.007341) X

y= 0.007x- 4.945

Putting the values

y= 0.007x- 4.945

18 = 0.007(3511) - 4.945

18< 20.829

​The estimated average miles per gallon for cars of this weight is (20.829 or 21 ) miles per gallon.

The miles per gallon of this car below (18 < 20.829) the average for cars of this weight.


Related Questions

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Use the slope and y-intercept to write an equation for the red cab.

Answers

Answer:

y=1/4x+6

Step-by-step explanation:

i guess

WHY DO U HATE ME?? ALSO HELP IN PIC!!!!!!!!!!!!

Answers

Answer:

Don't know u is correct. Also I'm not a h0* how rude  >:(

Answer:

None of the above because I love you

Step-by-step explanation:

I don't hate you and if some people do they must have there reasons which I don't know, but some people just hate for no reason and if they can hate for no reason some people can love for no reason.

You may be a complete stranger to me but I love you

Evaluate y=x/7+15 when y=21

Answers

Answer:

x = 42

Step-by-step explanation:

y = x/7 + 15 ; y = 21

21 = x/7 + 15

21 - 15 = x/7

6 = x/7

x = 6 × 7

x = 42

Thus, The answer is 42

-TheUnknownScientist

Answer:

x = 42

Step-by-step explanation:

I hope its helps.........

I need an answer ASAP!!

Answers

Answer:

x = 8

Step-by-step explanation:

because wy bisects XZ , XY and ZY are equal so ..

2x+3=3x-5

then x is 8❤

I'm about 90 percent sure that x is 8

Triangle ABC is similar to triangle FED, find the measure of x. A. X = 9 B. X = 11 C. X = 110 D. X = 231

Answers

Answer:

[tex]A+B+C=130[/tex]

[tex]F+E+D=273[/tex]

Step-by-step explanation:

From the question we are told that:

Dimension of ABC

A=9

B=11

C=110

Dimension of FED

D=231

Generally the equation for the similar triangles is mathematically given by

[tex]\frac{A}{F}=\frac{B}{E}=\frac{C}{D}[/tex]

Therefore solving for F

[tex]\frac{9}{F}=\frac{110}{231}[/tex]

[tex]F=\frac{9*231}{110}[/tex]

[tex]F=18.9[/tex]

Therefore solving for E

[tex]\frac{11}{E}=\frac{110}{231}[/tex]

[tex]E=\frac{11*231}{110}[/tex]

[tex]E=23.1[/tex]

Measure of [tex]\triangle ABC[/tex]

[tex]A+B+C=130[/tex]

Measure of [tex]\triangle FED[/tex]

[tex]F+E+D=273[/tex]

What is the independent and dependent variable in this statement, types of pizza or number of votes

Answers

Answer: type of pizza is dependant and the number of votes is independent

Step-by-step explanation:

the type of pizza they get depends on how many votes there are

any body can help me like pls

Answers

Answer:

Option D

Answer is D- 1/5Please mark as brainliest for future answers :)

Question 3 (5 points)
Which of the following statements must be true about parallelogram ABCD?

Answers

Answer:

<C = <A

Step-by-step explanation:

In parallelograms, opposite angles are congruent. This means that <C=<A and <B=<D. Additionally, adjacent angles are supplementary; so when added they equal 180.

GameStop pays $12.00 for each Minecraft video game. They markup each game by 40%. What is the selling price?

Answers

Answer:

$16.80

Step-by-step explanation:

12 * 1.4 = 16.8

Answer:

$16.80

Step-by-step explanation:

Find 40 % of 12 by multiplying .05*12 to get $4.80. Add the original price $12 and the price increase $4.80 to get the new selling price of $12

I don’t know if this is correct !!!!!!! Please answer correctly !!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!

Answers

Answer:

that is correct!!! and good job

In a science experiment, Shelly has to weigh a compound in grams. The balance in her school measures in milligrams (mg). Shelly finds that the weight of the compound is 8,450 mg. What is the value in grams (g) that Shelly should enter?

Answers

Answer:

8.45 grams

Step-by-step explanation:

In a science experiment, Shelly has to weigh a compound in grams. The balance in her school measures in milligrams (mg). Shelly finds that the weight of the compound is 8,450 mg. What is the value in grams (g) that Shelly should enter?

1 mg = 0.001 g

8450 mg = x

Cross Multiply

= 8450 × 0.001 g

= 8.45 g

Therefore, Shelly should enter 8.45 grams

can anyone help me with these

Answers

The answer is C

Trust me

A chef used 6 cups of flour for every 2 cups of sugar to bake a cake. If he uses 12 cups of sugar, how many cups of flour did he use?

Answers

Answer:

36

Step-by-step explanation:

2 goes into 12 6 times and 6x6 = 36.

Answer =36 6x6=36 12divided by 2

please help I am in fourth I don't know how to do this :(

Answers

Answer:

D

Step-by-step explanation:

I think so because you are divideng by 10*10 so it is 100 and you have to move to the right 2 places. I think thats it

Holly Chris and tony each collect action figures.Chris has twice as many action figures has 3 fewer action figures than Tony.

Answers

Answer:

i have the same question brainly peeps help out

Step-by-step explanation:

2\sqrt((25)/(64))-(3)/(8)

Answers

Answer:

ook

Step-by-step explanation:

oaxy8g7qd c7heuhwciwycowbobwxicx

donvc

what is the measure of AT in 0 below?​

Answers

Answer:

97 degrees

Step-by-step explanation:

Answer:

97

Step-by-step explanation:

1. Complete the table to find the sample space for rolling a
particular product on two number cubes

Answers

Step-by-step explanation:

is there supposed to be a pic attached?

Observe as afirmativas

Answers

Answer:

?

Step-by-step explanation:

An automatic dog feeder in the shape of a cone has a height of 18 centimeters. If it holds about 8,308 cubic centimeters of dog food, approximately what is its RADIUS?

Answers

21 cm.


V= 1/3 ^2
8308=1/3 (18)
8308/6
=21cm

please help, and thank you.

Answers

Answer:

G: Ms Ruiz

Step-by-step explanation:

She had the lowest slope

what is the lowest common multiple for 150, 250, 375 ​

Answers

Answer:

750

Step-by-step explaintion

150, 300, 450, 600, 750

250, 500, 750

375, 750

Answer:750

Step-by-step explanation:

Estimate a 20% tip on a dinner bill of $142.74 by first rounding the bill amount to the nearest ten dollars.
Estimated tip:
X
6
?

Answers

$142.74 rounded to nearest ten dollars is $140. And so now you find 20% of 140 by multiplying 140 by .20 (which is the decimal form of 20%). You’ll get $28 and that will be tip but total bill would be $140+$28 or $142.74+$28 to be exact.

Answer:$171.29

Step-by-step explanation:

if the tip amount is around $28.55 and your putting 20% it would $171.29 but it would determine how many people they are.

Can someone help with these 2? number 8 and 9!

Answers

Uh where’s the picture? or what is the question

Solve each triangle for the missing values shown. Show all work necessary. Use exact values

Answers

3)

[tex] Cos 60°= \frac{1}{2} = \frac{Adjacent} {Hypotenuse} = \frac{y} {10} \\\\ 2y=10 \\\\ y=5 [/tex]

Now, use Pythagoras theorem to find x

[tex] x^2+y^2=10^2 \\\\ \to x^2+5^2=10^2 \\\\ \to x^2+25=100 \\\\ \to x^2 = 100-25 \\\\ \to x^2= 75 \\\\ \to x= \sqrt{75} \\\\ \bf 5 \sqrt{3} [/tex]

Similarly,

4)

[tex] Sin 45°= \frac{1}{\sqrt{2}} = \frac{Opposite} {Hypotenuse} =\frac{2 \sqrt{2}} {a} \\\\ a= 2 \sqrt{2} \times \sqrt{2} \\\\ a=4 [/tex]

Now, use Pythagoras theorem to find b

[tex] b^2+(2 \sqrt{2}) ^2=a^2 \\\\ \to b^2+8=4^2 \\\\ \to b^2=16-8 \\\\ \to b^2 = 8\\\\ \to b= \sqrt{8} \\\\ \bf b=2 \sqrt{2} [/tex]

You can solve all of them in a similar way.

: )

a) 3∕5= 60∕100= 40% (resolvido) b) 11∕4= c) 4∕20= d) 9∕5= e) 10∕200= 5∕100= 5% (resolvido) f) 8∕200= g) 30∕300=

Answers

Answer:

En cada expresión queremos obtener 100 en el denominador.

Notar que en la primer eq. tendríamos:

a) 3/5 = (20/20)*(3/5) = (20*3)/(20*5) = 60/100 = 0.6  (corresponde a 60%)

b) 11/4 = ?

Acá el denominador es 4

tenemos que encontrar un número k tal que:

k*4 = 100

k = 100/4 = 25

Entonces podemos multiplicar denominador y numerador por 25.

11/4 = (25/25)*(11/4) = (25*11)/(25*4) = 275/100 = 2.75 (corresponde a 275%)

c) 4/20

el denominador es 20, entonces tenemos que resolver:

20*k = 100

k = 100/20 = 5

multiplicamos denominador y numerador por 5:

(5/5)*(4/20) = (5*4)/(5*20)  =  20/100 = 0.2  (corresponde al 20%)

d) 9/5

el denominador es 5, entonces debemos resolver:

5*k = 100

k = 100/5 = 20

Debemos multiplicar denominador y numerador por 20

(20/20)*(9/5) = (20*9)/(20*5) = 180/100 = 1.8  (corresponde a 180%)

e) 10/200 = 5/100 = 0.05  (corresponde al 5%)

f) 8/200

Se resuelve de similar forma al de arriba (que ya tenias resuelto).

Aca el denominador eso 200, entonces tenemos que tener:

200*k = 100

k = 100/200 = 1/2

Entonces multiplicamos numerador y denominador por 1/2

(1/2/1/2)*(8/200) = (8*1/2)/(200*1/2) = 4/100 = 0.04 (corresponde al 4%)

g) 30/300

aca el denominador es 300

Entonces:

300*k = 100

k = 100/300 = 1/3

Multiplicamos numerador y denominador por 1/3

(1/3/1/3)*(30/300) = (30*1/3)/(300*1/3) = 10/100 = 0.1  (corresponde al 10%)

The diameter of a circle is 5 cm. Find its circumference in terms of .

Answers

Answer:

If you are round the answer, you would get 15.7 cm. If not, you would get around 16 cm.

Step-by-step explanation:

The diameter is 5 and π is 3.14. You multiply those two together to get 15.7 cm. If the teacher asks to round, you will get 16 cm.

6. The height distributions of two different classes at Dover Elementary School are shown below. Both groups have the same interquartile range (IQR). Dover Elementary School Class Heights Third grade Fourth grade + 46 + 47 + 48 + 49 + 50 + 51 + 52 + 53 54 '55 which class has the greater median height?​

Answers

Answer:

G.fourth grade

Step-by-step explanation:

The media is the line inside the box that’s the middle

In third grade the median is 50 but in fourth grade the median is 52 so therefore your answer is fourth grade

And the reason I know this is because I’m in 7th and have the exact same question

How to solve this triangle, please help me.

Answers

Answer:

sum of angles in a triangle is 180

so 70+60+ 8x+2 = 180

132+ 8x = 180

8x = 180-132

x = 48/8

x= 6

then find the angle by substituting value of x

8x + 2

8*6 + 2

= 50°

What is the following product

Answers

Answer:

1.) y3

Step-by-step explanation:

Other Questions
________________ revenue arises when a business receives cash in one period, but does not provide all of the related goods or services until a later period In which passage does Swift restate his argument for eating impoverished babies? The HIPAA Privacy Rule applies to which of the following?All of the above Is the equation 3x 11x 10 0 a quadratic equation? Dr. Oken is testing you again. He wants to see if you know how the neutrons increase in quantity in relation to how the protons increase in quantity. Choose the best explanation to give him. a The quantity of neutrons is proportional to the megatron. For everyone megatron there is a neutron trying to bring it up from the bottom of the Pacific Ocean b The neutrons increase almost as quickly as the protons increase in number though there are often less neutrons than protons in the nucleusc The neutrons increase in number faster than the protons increase d The number of neutrons increases at the same exact rate as the protons increase in number. You add one proton and you get one neutron. This is true for the entire periodic table. What are two main differences between MLA and APA in-text citations? martin company reported net income of $15,000 on gross sales of $80,000. the company has average total assets of $135,000, of which $102,000 is property, plant and equipment. what is the company's return on investment? (rounded to the nearest decimal point.) Assume that a random variable is normally distributed with a mean of 1,300 and a variance of 271. Complete parts athrough c below.a. What is the probability that a randomly selected value will be greater than 1,350?The probability is(Round to four decimal places as needed.) Hi can someone answer this A car travels 210 miles in 3 hours and 45 minutes. How many miles does it travel per hour? cognitive engagement process of quickly arranging the information that we select to pay attention to, noticing different aspects of an encounter. Why do South Americans holds a larger celebration on december 24th than 25th? How do I answer Social Security disability questions? Is base times height divided by 2? What are the characteristics of a perfect Shakespearean sonnet? A business that accepts payments by credit and debit cards A. almost always pays a fee to the processor to cover the processing costs B. is usually unable to attract more customers C. generally receives proceeds from credit and debit card transactions 30-45 days after the sale D. must check each customer's credit rating What is it when an appellate court rejects a verdict? From "Are We Really as Awful as We Act Online?" by Augstin Fuentes (Ch. 22): Historically, we have maintained harmony by displaying compassion and geniality, and by fostering connectedness when we get together. Anonymity and the lack of face-to-face interaction on social media platforms remove a crucial part of the equation of human socialityand that opens the door to more frequent, and severe, displays of aggression. Being an antagonizer, especially to those you don't have to confront face-to-face, is easier now than it's ever been. If there are no repercussions for it, that encourages the growth of aggression, incivility, and just plain meanness on social media platforms (646). Which of the following would not be a type of circuit that needs to be considered when planning for technology design capacity? (Points : 5) 1000 Mbps Ethernet 10 Mbps 100 Mbps What is the full meaning of art?