1.

A Bernoulli variate takes a value 1 and 0 with probabilities 0.2 and 0.8 respectively. Find the mean and variance.

Answer»

The probability distribution is:

x:10
p(x):0.20.8

Mean = P = 0.2.

Variance = P(1 – P) 

= 0.2 x 0.8 

= 0.16.


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