Let x1 x2 denote an iid sequence of random variables each


Let X1, X2,... denote an iid sequence of random variables, each with expected value 75 and standard deviation 15. (a) How many samples n do we need to guarantee that the sample mean Mn(X) is between 74 and 76 with probability 0.99?

(b) If each Xi has a Gaussian distribution, how many samples n' would we need to guarantee Mn (X) is between 74 and 76 with probability 0.99?

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Basic Statistics: Let x1 x2 denote an iid sequence of random variables each
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