4. When you toss 5 coins once, if the number of head(s) is the random variable define on the resulting sample space. What is the set of random variable resulting from this experiment?
5.Let X have a standard gamma distribution with alpha =7. Compute P(X <4 or X>6)
6.If x is a normal variable with the mean u=5 and variance (sigma square)=16, what is the probability that x is less than or equal to 6?
7. Let X have a uniform distribution on the interval [A,B]. compute V(X)
9. Set X has 8 elements and set Y has 10 elements, if there are 5 common elements in X and Y, what is the cardinality of X union Y?
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