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A Study by a Bank Compared the Average Savings of Customers

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A study by a bank compared the average savings of customers who were depositors for three years or less, with those who had been depositors for more than three years. The results of a sample are: A study by a bank compared the average savings of customers who were depositors for three years or less, with those who had been depositors for more than three years. The results of a sample are: If the population standard deviations are unknown and assumed unequal, what are the degrees of freedom? If the population standard deviations are unknown and assumed unequal, what are the degrees of freedom?

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