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    Test hypotheses based on an output of a statistical package

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    There are four auto body shops in a community and all claim to promptly serve customers.
    To check if there is any difference in service, customers are randomly selected from each
    repair shop and their waiting times in days are recorded. The output from a statistical software
    package is:
    Summary
    Groups Count Sum Average Variance
    Body Shop A 3 15.4 5.133333 0.323333
    Body Shop B 4 32 8 1.433333
    Body Shop C 5 25.2 5.04 0.748
    Body Shop D 4 25.9 6.475 0.595833
    ANOVA
    Source of Variation SS df MS F p-value
    Between Groups 23.3732 13 7.791069 9.612506 0.001632
    Within Groups 9.726167 12 0.810514
    Total 33.09938 15
    Is there evidence to suggest a difference in the mean waiting times at the four body shops?
    Use the .05 significance level.

    © BrainMass Inc. brainmass.com June 3, 2020, 8:54 pm ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/157760

    Solution Preview

    There are four auto body shops in a community and all claim to promptly serve customers.
    To check if there is any difference in service, customers are randomly selected from each
    repair shop and their waiting times in days are recorded. The output from a statistical software
    package is:
    Summary
    Groups Count Sum ...

    Solution Summary

    The solution contains detailed explanation of testing hypotheses based on an output from a statistical software package.

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