The downtown parking authority of tampa, florida, reported the

The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of 234 ucstomers on the number of hours cars are parked and the amount they are charged.

Number of Hours Frequency Amount Charged
1 17 $4
2 37 6
3 50 14 
4 43 18
5 34 22 
6 12 24
7 7 28 
8 34 30

A. Convert the data on Frequency into a distribution of probabilities
B. Find the Mean and the standard deviation of the number of hours parked
B2 How long is a typical customer parked?
c. Find the mean and the standard deviation of the amount charged/

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