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Chapter 9: Q 1.1. (page 570)

For the job satisfaction study described in Section 9.1, the hypotheses are

H0:μ=0Ha:μisnotequalto0

where μis the mean difference in job satisfaction scores (self-paced machine-paced) in the population of assembly-line workers at the company. Data from a random sample of 18workers gave x⏜=17and sx=60

Calculate the test statistic. Show your work.

Short Answer

Expert verified

The test statistic is 1.273

Step by step solution

01

Given information

Sample mean (x)=17

Sample size(n)=18

Sample standard deviation (s)=60

02

Concept

The test statistic is computed as: t=x⏜−μsn

x=Sample mean

μ=Population mean

n=Sample size

s=Sample standard deviation

03

Explanation

The null and alternative hypotheses are:

H0:μ=0Ha:μ≠0

The test statistic can be computed as:

t=x⏜−μsnt=18-06018=1.273

Thus, the test statistic is1.273

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