# Hypothesis testing AIU job satisfaction data set

Using AIU's large database of survey responses from the AIU data set, complete the following:

Perform hypothesis testing on one variable's data. (Choose either the intrinsic or extrinsic column.) Perform a t-test by formulating a null and an alternative statement, choosing an acceptable significance value, selecting the test statistic and determining its value from the sample data, comparing the observed value to the critical value obtained and determining whether to reject or fail to reject the null hypothesis.

In a separate paragraph, provide some information on when to use a t-test and when to use a z-test and why. Also, provide some information about why samples are used instead of populations.

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#### Solution Summary

Step by step method for testing the the population mean of extrinsic variable AIU job satisfaction data set under 5 step approach is discussed here. Excel template for each problem is also included. This template can be used to obtain the answers of similar problems. A comparison of Z test and student t test is also included,