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4) A bank took 97 of its delinquent credit card accounts and found that the population mean owed on these accounts was $2,459. It is

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4) A bank took 97 of its delinquent credit card accounts and found that the population mean owed on these accounts was $2,459. It is known that the population standard deviation for all delinquent credit card accounts at this bank is $465. Give a 96% condence interval for the population mean amount owed on all delinquent credit card accounts for this bank. Interpret the results. 5) A random sample of 30 women results in a mean height of 66.71 inches. Other studies have shown that women's heights are normally distributed with a standard deviation of 1.6 inches. Construct a 97% condence interval for the mean height of all women. Interpret the results

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