Approximately 97.15%

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Assume the probability of having a cold at a given moment in the population is 20%. A group of 40
people is selected randomly. What is the probability that at least 4 people in this group of 40 people
have cold?
O Approximately 2.85%
O Approximately 97.15%
O Approximately 97.17%
O Approximately 0.70%
Transcribed Image Text:Assume the probability of having a cold at a given moment in the population is 20%. A group of 40 people is selected randomly. What is the probability that at least 4 people in this group of 40 people have cold? O Approximately 2.85% O Approximately 97.15% O Approximately 97.17% O Approximately 0.70%
Expert Solution
Step 1

Assume that the probability of having a cold at a given moment is in the population is 20%.

therefore P=0.2

Here X~B(n=40,p=0.2)

 

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