A study seeks to estimate the difference in the mean fuel economy (measured in miles per gallon) for vehicles under two treatments: driving with underinflated tires versus driving with properly inflated tires. To quantify this difference, the manufacturer randomly selects 12 cars of the same make and model from the assembly line and then randomly assigns six of the cars to be driven 500 miles with underinflated tires and the other six cars to be driven 500 miles with properly inflated tires. The dotplots show the data. ● ● ● 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 + + 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 Fuel economy (mpg) Underinflated Properly inflated

A study seeks to estimate the difference in the mean fuel economy (measured in miles per gallon) for vehicles under two treatments: driving with underinflated tires versus driving with properly inflated tires. To quantify this difference, the manufacturer randomly selects 12 cars of the same make and model from the assembly line and then randomly assigns six of the cars to be driven 500 miles with underinflated tires and the other six cars to be driven 500 miles with properly inflated tires. The dotplots show the data. ● ● ● 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 + + 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 Fuel economy (mpg) Underinflated Properly inflated

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 23PPS

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