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    Significance levels, mean, z score, and standard deviation

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    True or false:

    Fred wants to calculate the 98% confidence interval around the mean using the z-distribution. His sample of 64 items has a mean of 35 and a standard deviation of 6. The maximum error of estimate would be 0.218.

    © BrainMass Inc. brainmass.com March 4, 2021, 5:41 pm ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/significance-levels-mean-z-score-standard-deviation-6294

    Solution Preview

    Z = (X - mu)/Sigma
    Z = (X - 35)/6
    98% confidence interval
    Maximum error of estimate = ...

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