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A particular coin is biased. Each timr it is flipped, the probability of a head is...

A particular coin is biased. Each timr it is flipped, the probability of a head is P(H)=0.55 and the probability of a tail is P(T)=0.45. Each flip os independent of the other flips. The coin is flipped twice. Let X be the total number of times the coin shows a head out of two flips. So the possible values of X are x=0,1, or 2.

a. Compute P(X=0), P(X=1), P(X=2).
b. What is the probability that X>=1?
c. Compute the expected value of X and the variance X.
d. Let Y be the random variable Y=X/16. Compute the expected value of Y.

THANK YOU FOR ANY HELP GUYS!!
Math   Statistics-And-Probability   
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