Wall Street Journal reported that approximately 25% of the people who are told a product is improved will believe that it, in factimprovedThe remaining 75% believe that this is just hype same old thing with no real improvementSuppose a marketing study consists of a random sample of people who are a about a , improved product Compute the mean and standard deviation of this probability (round your standard deviation to two decimal places) What is the smaller number of people needed in the marketing study to be at least 99% sure that at least one person believes the product to be improved?

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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Wall Street Journal reported that approximately 25% of the people who are told a product is improved will believe that it, in factimprovedThe remaining 75% believe that this is just hype same old thing with no real improvementSuppose a marketing study consists of a random sample of people who are a about a , improved product Compute the mean and standard deviation of this probability (round your standard deviation to two decimal places) What is the smaller number of people needed in the marketing study to be at least 99% sure that at least one person believes the product to be improved?
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