Question: Refer to the probability distribution displayed in the table in Problem 18. In P 18 a. Find the mean of the random variable Y. b.

Refer to the probability distribution displayed in the table in Problem 18.

In P 18

a. Find the mean of the random variable Y.
b. On average, how many lines are busy?
c. Compute the standard deviation of Y.
d. Construct a probability histogram for Y; locate the mean; and show one-, two-, and three-standard-deviation intervals.

PX=y)| 0.052 0.154 0.232 0.240 0.174 0.105 0.043

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