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statistics

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The data below are the ages of a random sample of 8 men in a bar. It is known that the population of ages are normally distributed with a standard deviation of 11. Determine the 93% confidence interval estimate of the population mean.

50 70 22 36 59 39 27 47

  • statistics -

    Calculate mean = Σx/n

    93% = mean ± 1.81 SEm

    SEm = SD/√n

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