The mean and variance of a Bernoille random variable are given as
A)cannot be calculated
B)np and np(1-p)
C)p and $\sqrt { p ( 1 - p ) }$
D)p and (1- p)

Name: The mean and variance of a Bernoille random variable are given as A)cannot be calculated B)np and np(1-p) C)p and $\sqrt { p ( 1 - p ) }$ D)p and (1- p)
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Question

Quizplus · Accepted Answer

The mean of a Bernoulli random variable is $p$ and the variance is $p(1-p)$, where $p$ is the probability of success.

The Mean and Variance of a Bernoille Random Variable Are p(1−p)\sqrt { p ( 1 - p ) }p(1−p)​

The Mean and Variance of a Bernoille Random Variable Are $\sqrt { p ( 1 - p ) }$