Math Solutions

[Solution] An observational study investigated the territorial behavior of drivers in a busy campus parking lot. Informal interviews indicated that most

Question: An observational study investigated the territorial behavior of drivers in a busy campus parking lot. Informal interviews indicated that most people would leave faster if a car were waiting for them to depart. To verify this, 30 drivers were observed and timed for how long it took each one to enter his or her car and leave the parking space. Fifteen were randomly selected to be intruded upon by having another car pull up near the parking space as if its driver were waiting to claim the vacated space. The other 15 were timed but not intruded upon. The data (in seconds) are given here. Does driver behavior confirm what the interviews indicated? Use the seven-step procedure to give complete formal solution.

Intruded-Upon Drivers Nonintruded-Upon Drivers
51 61
58 55
46 46
80 70
83 52
45 55
63 68
69 53
63 52
69 62
65 45
58 55
75 65
64 41
63 52

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