Wait Times at Los Angeles Airport. Use the following table for Exercises 28–33. The data represent the number of passengers whose flights were delayed at the Tom Bradley Terminal of Los Angeles Airport (LAX), on July 2, 2014, between 4 P.M. and 5 P.M. Counts are given based on how long their flights were delayed.
| Delay (minutes) | Passengers |
|---|---|
| 665 | |
| 551 | |
| 497 | |
| 399 | |
| 355 | |
| 27 |
31. Extend your table from Exercise 29 so that it is similar to Table 18, including columns for , , and . Calculate .
3.3.31
| Delay (minutes) | Midpoint | Frequency | |||
|---|---|---|---|---|---|
| 0 to < 16 | 8 | 665 | 35.52 | –27.52 | 503,638.016 |
| 16 to < 31 | 23.5 | 551 | 35.52 | –12.02 | 79,608.7004 |
| 31 to < 46 | 38.5 | 497 | 35.52 | 2.98 | 4,413.5588 |
| 46 to < 61 | 53.5 | 399 | 35.52 | 17.98 | 128,988.8796 |
| 61 to < 91 | 76 | 355 | 35.52 | 40.48 | 581,713.792 |
| 91 to < 120 | 105.5 | 27 | 35.52 | 69.98 | 132,224.4108 |
| Total |