Mathematics, 10.05.2021 22:10 2020davidhines

A police officer is concerned about speeds on a certain section of Interstate 95. The data accompanying this exercise show the speeds of 30 cars on a Saturday afternoon. The sample average is 62 mph and sample standard deviation is 5 mph. The speed limit on this portion of Interstate 95 is 60 mph. Given that test statistic is 2.19 and critical t value is 2.462 at 1% significance, what is the decision at 1% significance

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A police officer is concerned about speeds on a certain section of Interstate 95. The data accompany...