Exercise 6-8
The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of 235 customers on the number of hours cars are parked and the amount they are charged.
Number of Hours Frequency Amount Charged
1 18 $3
2 33 7
3 49 10
4 44 15
5 34 19
6 15 24
7 8 27
8 34 30
235
--------------------------------------------------------------------------------
(a) Convert the information on the number of hours parked to a probability distribution. (Round your answers to 3 decimal places.)
Hours Probability
1
2
3
4
5
6
7
8
--------------------------------------------------------------------------------
(b-1) Find the mean and the standard deviation of the number of hours parked. (Round your intermediate values and final answers to 3 decimal places.)
Mean
Standard deviation
(b-2) How long is a typical customer parked? (Round your answer to 3 decimal places.)
The typical customer is parked for hours
(c) Find the mean and the standard deviation of the amount charged. (Round your intermediate values and final answers to 3 decimal places.)
Mean
Standard deviation
1 answer
1 answer