A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster. Use the definitions of X1 and X2 as given in the table. Consequently, D=X1=X2What critical value should be used at a-0.05? Gasoline MileageGasoline MileageWithout booster, X,Without booster, X1(mpg)(mpg)21.223.825.425.620.922.427.628.322.824.527.328.823.425.2

The null and alternative hypothesis is, H0:μ1-μ2=0 i.e. D=0Ha:μ1-μ2<0 i.e D<0 We have, n=7…

Answered: Gasoline Mileage Without booster, X…

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 3BGP

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A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster. Use the definitions of X₁ and X₂ as given in the table. Consequently, D=X1=X2

What critical value should be used at a-0.05?

Gasoline Mileage
Gasoline Mileage
Without booster, X,
Without booster, X1
(mpg)
(mpg)
21.2
23.8
25.4
25.6
20.9
22.4
27.6
28.3
22.8
24.5
27.3
28.8
23.4
25.2

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