Question

E(X) = npq is for which distribution?

A Bernoulli’s Correct Answer Incorrect Answer
B Binomial Correct Answer Incorrect Answer
C Poisson’s Correct Answer Incorrect Answer
D Normal Correct Answer Incorrect Answer
E Standard normal Correct Answer Incorrect Answer

Solution

In binomial distribution, probability of success is given by p and that of failure is given by q and the event is done n times. The mean of this distribution is given by npq.

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