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    Confidence Interval

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    Dunkin Donuts advertises that a dozen of their donuts weighs about 43 oz. A certain baker has figured out that she can stay out of trouble with her manager if each donut weighs about 3.6 oz. To test her donut-making process, she randomly selects thirty-one donuts after baking and weighs them. The average of the sample is 3.504 oz with s = 0.109 oz. Construct a 95% confidence interval for the true population mean of donut weights, and then explain whether or not she will be in trouble.

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    Solution Preview

    See response attached (some of which is presented below). I hope this helps and take care.

    RESPONSE: ...

    Solution Summary

    Regarding the question posted, this solution constructs a 95% confidence interval for the true population mean of donut weights, and then explains whether or not she will be in trouble.

    $2.19

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