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#14 help asap 2 hr time limit 14. A random sample of 120 American households has a mean computer usage time of 19.2 hours per

#14 help asap 2 hr time limit

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14. A random sample of 120 American households has a mean computer usage time of 19.2 hours per week with a standard deviation of 3.3 hours. Calculate the margin of error for the mean computer usage of all American households and the confidence interval with 95% level of confidence

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