Answered: The service manager of a car dealer…

Name: The service manager of a car dealer wants to determine if owners of ne
Uploaded: 2024-03-20T07:07:12.000Z
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Description: The service manager of a car dealer wants to determine if owners of new cars (two years old or less) tune up their cars more frequently than owners of older cars (more than two years old). From his records he takes a random sample of ten new cars and

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The service manager of a car dealer wants to determine if owners of new cars (two years old or less) tune up their cars more frequently than owners of older cars (more than two years old). From his records he takes a random sample of ten new cars and ten older cars and determines the number of times the cars were tuned up in the last 12 months. The data follow. Do these data allow the service station owner to infer at the 10% significance level that new car owners tune up their cars more frequently than older car owners?

Use the table to answer the following questions

2.What is the critical Value

3.What is the test statistic

Frequency of Tune Ups in Past 12 Months
New Car Owners
Old Cars Owners
3
2
3
3
3
3
15
3
12
14
The null and alternative hypotheses is:
A. HoiH1-H2=0 and Hz:41-H2<0
B. HoiH1-H2 =0 and Hz:1-42=0
C. H1:H1-H2=0 and H:H1-H2=0
D. Ho:H1-H2 =0 and Hz:H1-H2>0

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