The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of 250 customers on the number of hours cars are parked and the amount they are charged.
Number of Hours Frequency Amount Charged
1 20 $3.00
2 38 $6.00
3 53 $9.00
4 45 $12.00
5 40 $14.00
6 13 $16.00
7 5 $18.00
8 36 $20.00
Total 250
a. Convert the information on the number of hours parked to a probability distribution. Is this a discrete or a continuous probability distribution?
b. Find the mean and the standard deviation of the number of hours parked. How would you answer the question: How long is a typical customer parked?
c. Find the mean and the standard deviation of the amount charged