A bernoulli random variable has variance 0.21. what are the possible value of its success probability

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2021-10-25

A bernoulli random varaible has variance 0.21. what are the possible value of its success probability

Answer & Explanation

Jeffrey Jordon

Jeffrey Jordon

Expert2021-10-25Added 2605 answers

 A Bernoulli random variable has variance =p(1p)

Substitute here known values.

0.21=p(1p)

p2p+21=0

p=0.3 or p=0.7

Therefore, the possible values for its success probability p=0.3 or p=0.7

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