Question: 8.49 Find the sample size. You are planning a study in which you will use a 95% confidence interval to report the difference between two

8.49 Find the sample size. You are planning a study in which you will use a 95% confidence interval to report the difference between two proportions. Find the sample size needed for a margin of error of 0.2 if you do not have good guess at the values of the two proportions. How would your answer change if you were willing to guess p1*=0.65 and p2*=0.35 ?

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