SOLUTION: A poll is given, showing 25% are in favor of a new building project.
If 9 people are chosen at random, what is the probability that exactly 7 of them favor the new building pro
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Question 1095602: A poll is given, showing 25% are in favor of a new building project.
If 9 people are chosen at random, what is the probability that exactly 7 of them favor the new building project?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
This is 9C7, the number of ways can choose 7 from 9 multiplied by 0.25^7*0.75^2
=36*0.25^7*0.75^2=0.0012
The expected value is 2.25 with a sd of about 1.3, so a low probability is expected.
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