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StatisticsQ&A LibraryPreviously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0. They conducted a hypothesis test, and found that they had a Type I error, which is: to conclude that the current mean hours per week is higher than 4.5, when in fact, it is higher to conclude that the current mean hours per week is higher than 4.5, when in fact, it is the sameStart your trial now! First week only $4.99!*arrow_forward*

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- Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0. They conducted a hypothesis test, and found that they had a Type I error, which is:
- to conclude that the current mean hours per week is higher than 4.5, when in fact, it is higher
- to conclude that the current mean hours per week is higher than 4.5, when in fact, it is the same

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