DSE-2009

[Arun]

Ques 13 :

Let X denote the absolute value of difference between the numbers obtained when two dice are tossed.The Expectation of X is.


How do we solve this question??

[poonam]

the range of value that X can take are from 0 to 5.

 X          P(X)
0           6/36
1           10/36
2            8/36
3           6/36
4            4/36
5            2/36

E(X) = summation (X.P(X) )

[Arun]

Thanks poonam