Mathematics, 03.04.2021 23:40, bullockarwen

An Exercise Scientist believes that in recent time the the mean amount of time spent exercising has changed from 30 minutes a day. To test this claim a sample of 36 individuals is taken and a sample average of 35 minutes is calculated with a sample standard deviation of 14 minutes. What should the Scientist conclude at the 1% level of significance?

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