There are four auto body shops in Bangor, Maine, and all claim to promptly repair cars. To
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There are four auto body shops in Bangor, Maine, and all claim to promptly repair cars. To check if there is any difference in repair times, customers are randomly selected from each repair shop and their repair times in days are recorded. The output from a statistical software package is:
Is there evidence to suggest a difference in the mean repair times at the four body shops? Use the .05 significance level.
a. What are the null and alternate hypotheses?
b. What is the test statistic?
c. What is the p-value?
d. What is your decision regarding the null hypothesis?
e. Interpret the result.
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Related Book For
Statistical Techniques In Business And Economics
ISBN: 9781260239478
18th Edition
Authors: Douglas Lind, William Marchal, Samuel Wathen
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