Reconsider the previous exercise. a. If the observed proportion of successes turns out to be the same
Question:
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 Ã 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.
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Related Book For
Introduction To Statistical Investigations
ISBN: 9781118172148
1st Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy
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