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5.17 If X represents the number of people in Exer- cise 5.13 who believe that antidepressants do not cure but only cover up the real problem, find the mean and variance of X when 5 people are selected at random.

5.17 If X represents the number of people in Exer- cise 5.13 who believe that antidepressants do not cure but only cover up the real problem, find the mean and variance of X when 5 people are selected at random.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Please answer 5.17

5.17 If X represents the number of people in Exer- cise 5.13 who believe that antidepressants do not cure but only cover up the real problem, find the mean and variance of X when 5 people are selected at random.
Transcribed Image Text:5.17 If X represents the number of people in Exer- cise 5.13 who believe that antidepressants do not cure but only cover up the real problem, find the mean and variance of X when 5 people are selected at random.
5.13 A national study that examined attitudes about antidepressants revealed that approximately 70% of re- spondents believe "antidepressants do not really cure anything, they just cover up the real trouble." Accord- ing to this study, what is the probability that at least 3 of the next 5 people selected at random will hold this opinion?
Transcribed Image Text:5.13 A national study that examined attitudes about antidepressants revealed that approximately 70% of re- spondents believe "antidepressants do not really cure anything, they just cover up the real trouble." Accord- ing to this study, what is the probability that at least 3 of the next 5 people selected at random will hold this opinion?
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