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[Solution Library] Refer to problem (5). Using the formula on page 444 in our textbook, construct the 95% confidence interval for the difference in proportions

Question: Refer to problem (5). Using the formula on page 444 in our textbook, construct the 95% confidence interval for the difference in proportions p 1 -p 2 , where p 1 is the proportion of male diabetics who smoke, and p 2 is the proportion of female diabetics who smoke. Interpret the results. Compare this confidence interval to your hypothesis test result in #5. Explain why you would reject the null hypothesis if the confidence interval did not contain zero.

Male diabetics Female diabetics
x 1 = 215 x 2 = 170
n 1 = 500 n 2 = 500
population proportion p 1 population proportion p 2

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