An iid sequence of exponential random variables

Reference no: EM131083958

X1,..., Xn is an iid sequence of exponential random variables, each with expected value 5.

(a) What is Var[M9(X)], the variance of the sample mean based on nine trials?

(b) What is P[X₁ > 7], the probability that one outcome exceeds 7?

Reference no: EM131083958

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