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A random variable X takes the value 1,2,...

A random variable X takes the value 1,2,3 and 4 such that
`2P(X=1)=3P(X=2)=P(X=3)=5P(X=4)`.
If `sigma^(2)` is the variance and `mu` is the mean of X then `sigma^(2)+mu^(2)=`

A

(a) `421/61`

B

(b) `570/61`

C

(c) `149/61`

D

(d) `3480/3721`

Text Solution

Verified by Experts

The correct Answer is:
A
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