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    ANOVA and Chi Square Test

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    Chapter 15, problem 26
    A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information. At the .01significance level, is there a relationship between job pressure and age?
    Degree of Job Pressure
    Age (years) Low Medium High
    Less than 25 20 18 22
    25 up to 40 50 46 44
    40 up to 60 58 63 59
    60 and older 34 43 43

    Chapter 12 problem 30
    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:

    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

    Source of Variation SS df MS F p-value
    Between Groups 23.37321 3 7.791069 9.612506 0.001632
    Within Groups 9.726167 12 0.810514
    Total 33.09938 15

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    Solution Summary

    The solution gives details of calculation of ANOVA, Chi square test and confidence interval. Step by step procedure is given with detailed interpretation of the results obtained. Step by step solution is given with interpretation of the results obtained.