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    Hypothesis Testing for Refrigerators

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    I am a manufacturer of refrigerators. Historically ( the last year of manufacturing) I averaged 200 units a week with a 10 unit standard deviation. Recently we upgraded some of the line to improve production. I took a random sample over 30 random weeks and came up with a sample average of 205 units

    Did I make improvements that are statistical?

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    https://brainmass.com/statistics/hypothesis-testing/hypothesis-testing-refrigerators-45152

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    I am a manufacturer of refrigerators. Historically ( the last year of manufacturing) I averaged 200 units a week with a 10 ...

    Solution Summary

    The hypothesis testing for refrigerators are determined. How to make improvements that are statistical are determined.

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