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HW7A Q4 - Please help me solve parts 1 through 5. I included anexample A bank found that in recent years, the average monthly charge

HW7A Q4 - Please help me solve parts 1 through 5. I included anexample A bank found that in recent years, the average monthly charge on its credit card was \( \$ 1,400 \). With an improving economy, they suspect that this amount has increased. A sample of 45 customers re 2 answers

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