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question archive The manager of the zoo claims that the time spent by the visitors in the zoo is 90 minutes

The manager of the zoo claims that the time spent by the visitors in the zoo is 90 minutes

Subject:StatisticsPrice: Bought3

The manager of the zoo claims that the time spent by the visitors in the zoo is 90 minutes. A random sample of 16 visitors who went to the zoo produced the average time of 1.4 hour with a standard deviation of 15 minutes. Assuming the spending time by the visitors have a normal distribution and using the 5% significance level, test whether the average time spending in the zoo is not 90 minutes

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