22. Do You Return Your Questionnaires? A public opinion research firm claims that approximately 70% of those

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22. Do You Return Your Questionnaires? A public opinion research firm claims that approximately 70% of those sent questionnaires respond by returning the questionnaire.

Twenty such questionnaires are sent out, and assume that the firm’s claim is correct.

a. What is the probability that exactly 10 of the questionnaires are filled out and returned?

b. What is the probability that at least 12 of the questionnaires are filled out and returned?

c. What is the probability that at most 10 of the questionnaires are filled out and returned?

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Introduction To Probability And Statistics

ISBN: 9780357114469

15th Edition

Authors: William Mendenhall Iii , Robert Beaver , Barbara Beaver

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Question Posted: Sep 05, 2024 05:01 AM

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22. Do You Return Your Questionnaires? A public opinion research firm claims that approximately 70% of those

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Introduction To Probability And Statistics

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