Please I want to know the answer of:

a discrete random variable X has probability function
px(x)=2ֿx (this means 2 to the power of -x), x=1,2,3,.

Calculate:
a) Pr(X is even)
b)Pr(x>5)
c)Pr(X is divisible by 3)

Thanks a lot

Integration.

If x is even, then it must be divisible by 2. Right?




Try the others and let me know if you get stuck. See how to set up the third one now using this idea. How about #2?

Sorry but I didn't understand :(

Then you best see your instructor.