A study of one-millimeter crystal marbles used in making crystal chandeliers showed that the standar
Question: A study of one-millimeter crystal marbles used in making crystal chandeliers showed that the standard deviation of the weight a crystal marble is 250 milligrams. A crystal chandelier manufacturer wishes to find the 90% confidence interval for the average weight of a one-millimeter crystal marble. How many crystal marbles does she need to weigh to be accurate within 15 milligrams?
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Deliverables: Word Document
Deliverables: Word Document
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