SOLUTION: For a given sample with mean 12 and variance 4.8, calculate the sample size, n and the probability of success, p.

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Question 911158: For a given sample with mean 12 and variance 4.8, calculate the
sample size, n and the probability of success, p.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
np = 12
np(1-p) = 4.8
12(1-p) = 4.8
12 - 12p = 4.8
7.2 = 12p
7.2/12 = p
p =.6
.6n = 12
n = 20