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In a sample of college students (N=20), the average battery percentage on their cellphones was 51, with a standard deviation of 12. Calculate a 95%

  1. In a sample of college students (N=20), the average battery percentage on their cellphones was 51, with a standard deviation of 12.
    1. Calculate a 95% confidence interval for battery percentage. Be sure to show all relevant intermediate values.

  1. Interpret the meaning of this confidence interval.

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