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Statistics - Probability

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Although most people believe breakfast is the most important meal of the day, 25% of adults skip breakfast (U.S. News & World Report, November 10, 1997). Assume the population proportion is p = .25, and pbar is the sample proportion of adults who skip breakfast based on a sample of 200 adults.

a) Show the sampling distribution of pbar.

b) What is the probability that the sample proportion will be within plus or minur .03 of the population proportion?

c) What is the probability that the sample proportion will be within plus or minus .05 of the population proportion?

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Solution Summary

This solution shows all of the steps for calculating the sampling distribution and the probabilities in the given questions.

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