X1 xnnbspare independent uniform random variables all with


X1,..., Xn are independent uniform random variables, all with expected value µX = 7 and variance Var[X] = 3.

(a) What is the PDF of X1?

(b) What is Var[M16(X)], the variance of the sample mean based on 16 trials?

(c) What is P[X1 > 9], the probability that one outcome exceeds 9?

(d) Would you expect P[M16(X) > 9] to be bigger or smaller than P[X1 > 9]? To check your intuition, use the central limit theorem to estimate P[M16(X) > 9].

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Basic Statistics: X1 xnnbspare independent uniform random variables all with
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