# statistics

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Suppose that a coin is tossed 100 times. Let X be the number of times that it shows heads. Find the mean and standard deviation of X.

• statistics -

mean = np = (100)(.5) = ?
standard deviation = √npq = √(100)(.5)(.5) = ?
(Note: q = 1 - p)

I'll let you finish the calculations.

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