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olga55 [171]
3 years ago
14

An engineer wants to determine how the weight of a gas-powered car, x, affects gas mileage, y. The accompanying data represent t

he 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 and gas mileage data:

WieghtMiles per Gallon

379918
387715
271024
358218
333720
298423
374216
256624
337320
369616
339219

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. LOADING... Click here to view the weight and gas mileage data.

a) Find the least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable.

b) Interpret the slope and y-intercept, if appropriate. Choose the correct answer below and fill in any answer boxes in your choice:
For every pound added to the weight of the car, gas mileage in the city will decrease by _________ mile(s) per gallon, on average.

c) A certain gas-powered car weighs 3700 pounds and gets 17 miles per gallon. Is the miles per gallon of this car above average or below average for cars of this weight?

d) Would it be reasonable to use the least-squares regression line to predict the miles per gallon of a hybrid gas and electric car? Why or why not?
Mathematics
2 answers:
Westkost [7]3 years ago
7 0

Answer:

A. For every pound added to the weight of the​ car, gas mileage in the city will decrease by

0.005920.00592 ​mile(s) per​ gallon, on average. It is not appropriate to interpret the​ y-intercept

​(c) ABOVE

No, because the hybrid is a different type of car.

Step-by-step explanation:

11111nata11111 [884]3 years ago
4 0
I believe c is ABOVE
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avanturin [10]

it's D because 5 time the difference of means it's gotta be 5 time the answer of a problem in parenthesis , the rest is quite logical so... yeah it's D

4 0
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What is the length of a desk in centimeters ​
TiliK225 [7]

Answer:

what desk

Step-by-step explanation:

6 0
3 years ago
1 point
Elan Coil [88]

Your current balance if you started the day with $100 in your account is $73

First step is to calculate the total cash at bank

Using this formula

Total Cash at bank= Cash at bank + Deposit

Let plug in the formula

Total Cash at bank=$100+90

Total Cash at bank=$190

Second step is to calculate the amount debited

Debit amount=($60+$3)+($34+$20)

Debit amount=$63+$54

Debit amount=$117

Now let determine your current balance

Current balance=Total cash at bank-Amount debited

Let plug in the formula

Current balance=$190-117

Current balance=$73

Your current balance if you started the day with $100 in your account is $73

Learn more here:

brainly.com/question/22165984

7 0
2 years ago
Carlotta subscribes to the HotBurn music service. She can download no more than 12 song files per week. Carlotta has already dow
UNO [17]

Answer:

Inequality: x+10\leq 12

Inequality solved: x\leq 2

The graph is attached.

Step-by-step explanation:

You need to remember the meaning of the inequalities symbols:

: Less than.

> : Greater than.

\leq : Less than or equal to.

\geq : Greater than or equal to.

Let be "x" the number of more songs Carlotta can download.

According to the information given in the exercise, she can download no more than 12 song files per week. This indicates that you must use the symbol \leq.

Since she has already downloaded 10 song files this week, you can write the following inequality that represents this situation:

x+10\leq 12

In order to solve it, you must subtract 10 from both sides:

x+10-10\leq 12-10\\\\x\leq 2

Plot this result on a number line.

Since the symbol of the inequality is \leq, the dot must be filled (Observe the number line attached).

8 0
3 years ago
Which situation could be represented by the equation - 15 + 15 = 0?
Tema [17]

Answer:

B

Step-by-step explanation:

Yuh

7 0
3 years ago
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