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    Probability Normal Distribution

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    A sample of 100 is taken from a population which has a normal distribution with a mean of 80 and a standard deviation of 40.

    What is the probability that the sample mean is between 74 and 81 is?

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    https://brainmass.com/statistics/normal-distribution/probability-normal-distribution-1838

    Solution Preview

    n=100
    <br>
    <br>X - Normal (mean=80, sd=40)
    <br>
    <br>Xbar - sample mean
    <br>
    <br>P(74< Xbar < ...

    Solution Summary

    The solution addresses if a sample of 100 is taken from a population which has a normal distribution with a mean of 80 and a standard deviation of 40. What is the probability that the sample mean is between 74 and 81 is?

    $2.49

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