Your quality control department has just analyzed the contents of 20 randomly selected barrels of materials to be used i

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answerhappygod
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Your quality control department has just analyzed the contents of 20 randomly selected barrels of materials to be used i

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Your quality control department has just analyzed the contentsof 20 randomly selected barrels of materials to be used inmanufacturing plastic garden equipment. The results found anaverage of 41.93 gallons of usable materials per barrel. The samplestandard deviation has been .1789 gallons. Let the unknownpopulation mean of usable material per barrel be denoted by µ(gallons). Find a 95% confidence interval for µ. Assume that thepopulation distribution is normal.
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