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Statistics

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Let’s suppose a randomly selected sample of 75 American teenagers watches an average of 1472 hours of television per year with a standard deviation of 250 hours. Construct the 95% confidence interval (CI) for the mean number of hours American teenagers watch television per year

  • Statistics -

    Formula:

    CI95 = mean ± 1.96(sd/√n)

    With your data:

    CI95 = 1472 ± 1.96(250/√75)

    Finish the calculation for your confidence interval.

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