Given a distribution X ∼ N(50,4). Suppose you form random samples of 25 from the distribution. Let X be the random variable of averages and ? X be the random variable of sums. (a) What is the mean and...







  1. Given a distribution X ∼ N(50,4). Suppose you form random samples of 25 from the


    distribution. Let X be the random variable of averages and ? X be the random variable of sums.


    (a) What is the mean and the standard deviation of X?
    (b) What is the mean and the standard deviation of ?X?
    (c) Find the probability P (X <>


    (d) Find the probability P (? X > 200).








Jun 08, 2022
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