Question

During a blood-donor program conducted during finals week for college students, a blood-pressure reading is taken first, revealing that out of 250 donors, 33 have hypertension. All answers to three places after the decimal.

Assuming our sample of donors is among the most typical half of such samples, the true proportion of college students with hypertension during finals week is between _____ and _____.

We are 99% confident that the true proportion of college students with hypertension during finals week is _____, with a margin of error of ____.

Assuming our sample of donors is among the most typical 99.9% of such samples, the true proportion of college students with hypertension during finals week is between _____ and ____.

Covering the worst-case scenario, how many donors must we examine in order to be 95% confident that we have the margin of error as small as 0.01? _____

Using a prior estimate of 15% of college-age students having hypertension, how many donors must we examine in order to be 99% confident that we have the margin of error as small as 0.01? ______

Answer 1