# Hypothesis testing of Mean-Extrinsic value of AIU Data Set

Using the large database of survey responses from the 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, determining the appropriate critical 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

The solution provides step by step method for the calculation of testing of hypothesis . Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data. Also the solution 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.