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Mathematics, 13.08.2019 04:30 UltimateGoal
5. the length of time between billing dates and checks received and deposited for non-delinquent accounts of an oil company’s monthly credit card customers is 13.5 days with a standard deviation of 3 days. a bank claims if the company used a lockbox system, it could reduce the company’s average time. thirty-six (36) accounts were randomly selected and tested using the lockbox system. the average time was found to be 13 days. what is your conclusion at the 2.5% level of significance?
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