SOLUTION: if a fair coin is tossed 100 times, find the mean and the standard deviation for the number of heads.

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Question 431891: if a fair coin is tossed 100 times, find the mean and the standard deviation for the number of heads.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!

Mean = n * p = 100 * 0.5 = 50 (heads)
n = NUMBER OF TOSSES
p = PROBABILITY OF SUCCESS (heads)
Standard Deviation = SQRT [n * p (1 - p)] = SQRT[ 100 * 50 (1 - 0.5)] = 50