Posted by **Nicole** on Tuesday, September 28, 2010 at 10:46am.

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

## Answer this Question

## Related Questions

- statistics - Question2: When parking a car in a downtown parking lot, drivers ...
- math - ANSWER THESE NOW PLEASE !!!!!!! 2.yesterday ,a parking lot had 10 cars ...
- Math - Yesterday, a parking lot had 60 cars parked in it. Of the cars parked in ...
- Stats...is this correct? - A sample of purchases at the local convenience store ...
- math***check answerss**** - please check answers... 2.yesterday ,a parking lot ...
- statistics - Suppose that in the aerobic exercise group we also measured the ...
- biostatistics - 7. Consider again the data in problem #6. Suppose that in the ...
- Stats - Recently, an automobile insurance company performed a study of a random ...
- Biostatistics HW - Consider again the data in problem #6. Suppose that in the ...
- 7th grade math - write a rate that can be calculated from the information. There...