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    Estimation using Normal Distribution

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    A random sample of 55 adults in a certain country showed an average height of six feet (72 inches) for adults. Statistics show the population standard deviation to be 3.40 inches.
    Calculate the 95% confidence interval for the mean height of the adult population.

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    Solution Preview

    Mean= M = 72 inches
    Standard deviation =s = 3.40 inches
    sample size=n= 55
    s x=standard error of mean=s / ...

    Solution Summary

    Population mean is estimated using normal distribution