Reconsider the previous exercise.
a. If the observed proportion of successes turns out to be the same for both groups, would you expect the p-value to be very small, somewhat small, or not small at all? Explain.
b. If Group A results in only successes and Group B results in only failures, would you expect the p-value to be very small, somewhat small, or not small at all? Explain.

Data from previous exercise

Suppose that you collect data on two categorical variables and summarize the results in a 2 × 2 table of counts such as the following:

Your goal is to decide if the data provide strong evidence that Group A and Group B diff er with regard to the long-run proportion of success.

Transcribed Image Text:

Group A Group B Success Failure