A Gallup poll found that of those Americans who have lost weight, 33% believed the most effective

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A Gallup poll found that of those Americans who have lost weight, 33% believed the most effective strategy involved exercise. A random sample of 400 Americans is selected.

a. What is the mean and standard deviation of the sampling distribution of sample proportion?

b. What is the probability that the sample proportion falls between 32% and 36%?

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Seeing Through Statistics

ISBN: 978-1285050881

4th edition

Authors: Jessica M.Utts

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Posted Date: Sep 19, 2022 03:25 PM

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A Gallup poll found that of those Americans who have lost weight, 33% believed the most effective

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Seeing Through Statistics

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