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
Table 3.80: Source: U.S. Customs and Border Protection: awt.cbp.gov.

Question 3.242

29. Construct a table similar to Table 17, showing the frequencies, , the midpoints, , the products, , the sum of the frequencies, , and the sum of the products, .

3.3.29

Delay (minutes) Frequency Midpoint Product
0 to < 16 665 8 5,320
16 to < 31 551 23.5 12,948.5
31 to < 46 497 38.5 19,134.5
46 to < 61 399 53.5 21,346.5
61 to < 91 355 76 26,980
91 to < 120 27 105.5 2,848.5
Total