DISCUSSION

The Chi-squared test has been used earlier to test a hypothesis about a population variance. It is also a hypothesis testing procedure for when one or more variables in the research are categorical (nominal). During this week, we are covering the following two such Chi-squared tests:

1. Chi-squared Goodness of Fit Test
2. Chi-squared Test for Independency

1. Describe an example of a research question where a Chi-squared test has been used. Mention the two hypotheses of the problem and display a numerical demonstration of your example. In particular, interpret the test P value in the context of your research example.
2. Describe why the Chi-squared tests of the types mentioned above are always right-tailed hypothesis testing problems.

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