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    Statistics - Confidence Interval

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    The following random sample from a population whose values were normally distributed was collected.

    10 8 11 11

    The 95% confidence interval for m is
    a) 8.52 to 10.98
    b) 7.75 to 11.75
    c) 9.75 to 10.75
    d) 8.00 to 10.00

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    https://brainmass.com/statistics/confidence-interval/statistics-confidence-interval-244536

    Solution Preview

    m = (10 + 8 + 11 + 11)/4 = 10

    Deviations from m are d = {0, -2, 1, 1} and d^2 = {0, 4, 1, 1}

    Sum(d^2) = ...

    Solution Summary

    The expert calculates the confidence interval in statistics. A complete, neat and step-by-step solution is provided.

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