When parking a car in a downtown parking lot, drivers pay according to the number of hours or fraction thereof. The probability distribution of the number of hours cars are parked has been estimated as follows:

X12345678
P(X)0.2080.1280.1050.0950.070.0310.0240.339

A. Mean =

B. Standard Deviation =

The cost of parking is 4.25 dollars per hour. Calculate the mean and standard deviation of the amount of revenue each car generates.

A. Mean =

B. Standard Deviation =

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