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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:渭=0Ha:渭isnotequalto0

where 渭is 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铃�=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铃�鈭�渭sn

x=Sample mean

渭=Population mean

n=Sample size

s=Sample standard deviation

03

Explanation

The null and alternative hypotheses are:

H0:渭=0Ha:渭鈮�0

The test statistic can be computed as:

t=x铃�鈭�渭snt=18-06018=1.273

Thus, the test statistic is1.273

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Most popular questions from this chapter

A random sample of 100likely voters in a small city produced 59voters in favor of Candidate A. The observed value of the test statistic for testing the null hypothesis H0:p=0.5versus the alternative hypothesis Ha:p=0.5is

(a)z=0.59-0.50.59(0.41)100

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(c). z=0.5-0.590.59(0.41)100

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(a) Find the P-value for this test using (i) Table Band (ii) your calculator. What conclusion would you draw at the 5%significance level? At the 1%significance level?

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