SOLUTION: Roll 80 dice and count how many fours you get. how do I get the standard deviation

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Question 924520: Roll 80 dice and count how many fours you get. how do I get the standard deviation
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(4) = 1/6, mean = (1/6)(80), sd = sqrt%28npq%29+=+sqrt%2880%281%2F6%29%285%2F6%29%29