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HW Problem 42. (5 pts) Weekly deposits at a local bank are subject to a great deal of variability. Historically the variance of weekly deposits

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HW Problem 42. (5 pts) Weekly deposits at a local bank are subject to a great deal of variability. Historically the variance of weekly deposits has been about $199,996,164. (In terms that make more sense, the standard deviation of weekly deposits has been about $14,142). The current manager of the bank wants to see if the variance has changed. He randomly samples 13 weeks of deposits and finds a sample mean weekly deposit of $101,387 with a sample standard deviation of $28,846. At the .10 level of significance, has the variance of weekly deposits changed significantly from the historical average of $199,996,164? List and clearly label all eight steps

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