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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 the sample are... mean savings balance less than 3 years $1200 and greater than 3 years $1250....population standard deviation less than 3 years $100 and greater than 3 years $250.....sample size less than 3 years 100 greater than 3 years 150.......are those depositors that have been with the bank more than three years have higher average savings balances? test at 0.1 level......what is the hypothesis......what test are you using......test stat? and decision

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