Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

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

image text in transcribed
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 (c) below. 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. y = [x+0 i Car Weight and MPG - X (Round the x coefficient to five decimal places as needed. Round the constant to two decimal places as needed.) (b) A certain gas-powered car weighs 3500 pounds and gets 21 miles per gallon. Is the miles per gallon of this car above average or below average for cars of this weight? Weight Miles per Gallon, y O Below (pounds), x 3726 17 O Above 3786 15 2772 24 (c) 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? 3527 19 3334 22 O A. No, because the absolute value of the correlation coefficient is less than the critical value for a sample size of n = 11. 2970 24 O B. Yes, because the absolute value of the correlation coefficient is greater than the critical value for a sample size of n = 11. 3693 16 O C. No, because the hybrid is a different type of car. 2701 23 O D. Yes, because the hybrid is partially powered by gas. 3561 19 3891 18 3230 19

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Linear Algebra and Its Applications

Authors: David C. Lay

4th edition

321791541, 978-0321388834, 978-0321791542

More Books

Students also viewed these Mathematics questions