Chapter 6, Section 1-CI, Exercise 011

Use the normal distribution to find a confidence interval for a proportionpgiven the relevant sample results. Give the best point estimate forp, the margin of error, and the confidence interval. Assume the results come from a random sample.

A 99% confidence interval forpgiven thatp^=0.33

andn=450

.

Round your answer for the best point estimate to two decimal places, and your answers for the margin of error and the confidence interval to three decimal places.

Best point estimate =

.

Margin of error

=

.

The 99% confidence interval is

.