Seventy percent of adults favor some kind of government control on the prices of medicines. Assume that this percentage is true for the current population of all adults. Find the probability that the proportion of adults in a random sample of 400 who favor some kind of government control on the prices of medicines is... (round to 4 decimals) a)less than 0.65 b) between 0.71 to 0.77

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Seventy percent of adults favor some kind of government control on the prices of medicines. Assume that this percentage is true for the current population of all adults. Find the probability that the proportion of adults in a random sample of 400 who favor some kind of government control on the prices of medicines is... (round to 4 decimals)

a)less than 0.65

b) between 0.71 to 0.77 

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