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A random sample of 20 hogs on farmer Brown's hog farm had an average weight of 350 pounds and a SD of 70 pounds. Find 95% confidence interval estimate of the mean weight of all farmer Brown's pigs.

  • statistics -

    E=CV(SD/square root of n)
    E=1.96(70/square root of 20)
    E=6.86
    mean-e<mean<mean+e
    350 - 6.86 < 350 < 350 + 6.86

    343.14 < mean < 356.86

    I think that is right

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