# Question

A sample of 200 observations selected from a population gave a sample proportion equal to .27.

a. Make a 99% confidence interval for p.

b. Construct a 97% confidence interval for p.

c. Make a 90% confidence interval for p.

d. Does the width of the confidence intervals constructed in parts a through c decrease as the confidence level decreases? If yes, explain why.

a. Make a 99% confidence interval for p.

b. Construct a 97% confidence interval for p.

c. Make a 90% confidence interval for p.

d. Does the width of the confidence intervals constructed in parts a through c decrease as the confidence level decreases? If yes, explain why.

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