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A coin is tossed with P(Heads) = p a) What is the expected number of tosses...

A coin is tossed with P(Heads) = p

a) What is the expected number of tosses required to get n heads?

b) Determine the variance of the number of tosses needed to get the first head.

c) Determine the variance of the number of tosses needed to get n heads.

Math   Statistics-And-Probability   
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