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  3. 2 previously an organization reported that teenage

2 Previously an organization reported that teenagers spent 4 5 hours per week on average...

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2 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 Give the null and alternative hypotheses Do not run a test

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