Consider the following scenario. 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.

Question

Mathematics

Lobster

13 June, 03:27

Consider the following scenario. 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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Shawn Cole · Answer 1

Marble Factory: 10 Grams A piece

Standard: 100 = 20gs (you got one thats 960 Grams.)

Basically it's fake because they only way 10 grams a piece at that factory and in this case the marbles weigh more