American Airlines is trying to determine which baggage handling system it will put in its new hub terminal at San Juan, Puerto Rico. One system is made by Jano Systems and a second baggage handling system is manufactured by Dynamic Enterprises. American has installed a small Jano system and a small Dynamic Enterprises system in two of its low-volume terminals. Both terminals handle approximately the same quantity of baggage each month. American has decided to select the system that will provide the minimum number of instances in which passengers disembarking must wait 20 minutes or longer for baggage. Analyze the data that follow and determine whether there is a significant difference at the .95 level of confidence between the two systems. If there is a difference, which one should American select? Show details of your work.

Minutes of Waiting

Jano Systems (Frequency)

Dynamic Enterprise (Frequency)

10-11

4

10

12-13

10

8

14-15

14

14

16-17

4

20

18-19

2

12

20-21

4

6

22-23

2

12

24-25

14

4

26-27

6

13

28-29

10

8

30-31

12

6

32-33

2

8

34-35

2

8

36 or more

2

2