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A random variable X has the following pr...

A random variable X has the following probability distribution
`{:(X=x_(1),1,2,3,4),(P(X=x_(1)),0.1,0.2,0.3,0.4):}`
The mean and the standard deviation are, respectively a)3 and 2 b)3 and 1 c)3 and `sqrt(3)` d)2 and 1

A

3 and 2

B

3 and 1

C

3 and `sqrt(3)`

D

2 and 1

Text Solution

Verified by Experts

The correct Answer is:
B
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