Statistics!?

A player rolls two dice. The players receive $10.00 for each dot on the face of the two dice. For example, he will be paid $9.00 if the dice show a 4 and a 5. Let X= the number of dollars won each game.


a) Is X discrete or continuous random variable?


b) Show the probability distribution of X.


c) Find the expected value of X.


d)FInd the variance of the pay off.





I think a is continuous random variable.


BUT the rest i am clueless XD

Statistics!?
First if the players receive 10 for each dot, he will be paid 90 for 4 and 5 not 9.





It's a discrete variable since there is a limited number of value that X can have.


X can be 2-3-4-5-6-7-8-9-10-11-12


It can't be 2.56895