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A random avriable X has its range {1,2,3...

A random avriable X has its range `{1,2,3}`. `P(X=1)=1//6, P(X=2)=1//3, P(X=3)=1//2`. If mean =a, variance =b and standard =c then the descending order of a,b,c, is

A

a,b,c

B

b,c,a

C

c,a,b

D

a,c,b

Text Solution

Verified by Experts

The correct Answer is:
D
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