Suppose the random variable X has the probability distribution given below:
Let $Y=(2*(X^2))+6$.The expected value E(Y) is:
A) 9.5 B) 6. C )15.5. D )18
Mayankprakash This question is just asking for basics of random variable.
Y is a dependent random variable which depends on value of X. So by substituting the value of X you can calculate value of Y and E(Y) is expectation(mean) of random variable Y.