Question: Random samples of size n were selected from binomial populations with population parameters p given here. Find the mean and the standard deviation of the

Random samples of size n were selected from binomial populations with population parameters p given here. Find the mean and the standard deviation of the sampling of the sample proportion in each case:
a. n = 100, p = .3
b. n = 400, p = .1
c. n = 250, p = .6

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