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

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eviously an organization reported that teenagers spent 4 5 hours per week on average on the phone The ganization thinks that currently the mean is higher Fifteen randomly chosen teenagers were asked how many hours r week they spend on the phone The sample mean was 4 75 hours with a sample standard deviation of 2 0 Does e organization have evidence to support their thought that the mean is currently higher at Procedure would you use Select an answer estion Help Post to foru ubmit Question Jump t 2 Proportion Z Interval 1 Proportion Z Test 2 Sample T Interval 2 Sample T Test

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