SAT, 29.04.2021 14:40 elondamason

A marble factory produces marbles that weigh 10 grams apiece. The standard deviation of the weight of a bag of 100 marbles is 20 grams. You buy a bag of 100 marbles that weighs 960 grams. Use mathematical calculations to prove 95% confidence that the purchased bag of marbles did not come from the factory.

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A marble factory produces marbles that weigh 10 grams apiece. The standard deviation of the weight o...

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