SOLUTION: If I could just get some help with this one. The probability that a person is left handed is .20. you interview 12 people for a study what is the expected number of left handed peo

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Question 430393: If I could just get some help with this one. The probability that a person is left handed is .20. you interview 12 people for a study what is the expected number of left handed people out of 12
Thanks,
Gina
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
This experiment follows the binomial distribution, with n = 12, p = 0.20, and q = 1 - p = 0.80. The expectation is mu+=+npq+=+12%2A0.20%2A0.80+=+48%2F25+=+1.92