Question: . Estimate the minimum sample size needed to form a confidence interval for the proportion of a population that has a particular characteristic, meeting the

. Estimate the minimum sample size needed to form a confidence interval for the proportion of a population that has a particular characteristic, meeting the criteria given.

a. p 0.81, 95% confidence, E = 0.02

b. p 0.81, 99% confidence, E = 0.02

c. p 0.81, 95% confidence, E = 0.01

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