SOLUTION: The probability that a person has immunity to a particular disease is 0.8. Find the mean number who have immunity in samples of size 25.

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Question 1172031: The probability that a person has immunity to a particular disease is 0.8. Find the mean number who have immunity in samples of size 25.
Answer by ikleyn(52897) About Me  (Show Source):
You can put this solution on YOUR website!
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    0.8*25 = 20.    ANSWEWR

It is OBVIOUS.