In: Statistics and Probability
The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of 231 customers on the number of hours cars are parked and the amount they are charged.
| Number of Hours | Frequency | Amount Charged | |||
| 1 | 22 | $ | 3 | ||
| 2 | 38 | 6 | |||
| 3 | 51 | 8 | |||
| 4 | 45 | 12 | |||
| 5 | 20 | 14 | |||
| 6 | 14 | 16 | |||
| 7 | 5 | 18 | |||
| 8 | 36 | 22 | |||
| 231 | |||||
b-1. Find the mean and the standard deviation of the number of hours parked
b-2. How long is a typical customer parked?
Find the mean and the standard deviation of the amount charged.
1.
B-1.
| Number of hours, x | Frequency f |
| 1 | 22 |
| 2 | 38 |
| 3 | 51 |
| 4 | 45 |
| 5 | 20 |
| 6 | 14 |
| 7 | 5 |
| 8 | 36 |


B-2.
A typical customer is parked for 4.0606 hours.
2.
Data:
| Amount Charged, x | Frequency f |
| 3 | 22 |
| 6 | 38 |
| 8 | 51 |
| 12 | 45 |
| 14 | 20 |
| 16 | 14 |
| 18 | 5 |
| 22 | 36 |


Please upvote if you have liked my answer, would be of great help. Thank you.