Parking has always been a problem at Switzer University. This year the University began a widely publicized TROLL system to transport students, faculty, and staff from outlying parking areas to main campus in large trolleys. Currently, Switzer administrators are trying to determine whether the program is a success. A random sample of 60 school days from last year shows that the mean number of parking tickets issued by the University police was 142 with a standard deviation of 33. A random sample of 60 days this year indicates that parking tickets have fallen to a mean of 130 per day with a standard deviation of 27. From a statistical point of view, has the TROLL system been a success? From a research design perspective, how confident are you of this result? How about from a management perspective?
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