# New York University STAT-UB STAT-UB 511 total taxi fares are determined by distance travelled as well as the amount of time taken for the trip. In preparing to apply for a rate increase,…

New York University STAT-UB STAT-UB 511 total taxi fares are determined by distance travelled as well as the amount of time taken for the trip. In preparing to apply for a rate increase,…

# total taxi fares are determined by distance travelled as well as the

amount of time taken for the trip. In preparing to apply for a rate increase, the general manager of a fleet of taxis wanted to know the distance customers travel by taxi on the average trip. She organized a survey wherein she asked taxi drivers to record the number of miles (to the nearest one-tenth) traveled by randomly selected customers. A sample of 41 customers was produced. The sample results appear below. Construct a 95% confidence interval around the sample mean. Be sure to show whether you use the t- or z- value, and interpret the meaning confidence interval in a single sentence. Also, state why you used either the “t” or the “z”.

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8.2, 9.1, 11.2, 5.0, 6.4, 9.5, 10.1, 7.9, 8.3, 6.8, 6.9, 7.9, 1.1, 6.7, 11.4, 6.9,
6.5, 8.0, 1.5, 8.2, 7.6, 14.1, 7.0, 10.0, 7.1, 8.0, 8.1, 4.4, 5.9, 2.3, 13.3, 9.2,
2.8, 13.0, 8.3, 10.4, 9.0, 3.5, 9.8, 6.5, 7.7

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