Difference in the amount dispensed

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A vending machine designed to dispense coffee into 8 milliliter cups was checked by a technician who samples 4 cups before making an adjustment, and 5 cups after making an adjustment. Assuming that the variance are known to be equal, find a 90% confidence interval for the mean difference in the amount dispensed due to the adjustment, if the sample showed the following amount of coffee 9/29/21 16 Before adjustment. 6.92 7.34 7.26 6.88 After adjustment 7.33 7.93 7.65 7.49 7.1

Reference no: EM133078507

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