et X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. 1 2 3 4 P(x) | 0.2 0.3 0.4 0.1 (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1.5 2 2.5 3 3.5 P(X) (b) Refer to part (a) and calculate P(X S 2.5).
et X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. 1 2 3 4 P(x) | 0.2 0.3 0.4 0.1 (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1.5 2 2.5 3 3.5 P(X) (b) Refer to part (a) and calculate P(X S 2.5).
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Please solve (a) and (b) only! The answer for (b) is not 0.2 or 0.6!
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