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    Confidence interval for mean

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    In manufacturing process a random sample of 36 bolts manufactured has a mean length of 3 inches with a standard deviation of .3 inches.

    What is the 99% confidence interval for the true mean length of the bolt?

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    Basics and Confidence Intervals 3
    In manufacturing process a random sample of 36 bolts manufactured has a mean length of 3 inches with a standard deviation of .3 inches.

    What is the 99% confidence interval for ...

    Solution Summary

    Step by step method for computing confidence interval for mean is given in the answer.

    $2.49

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