3. Vending Machine Specifications for vending machines made by the Newton Machine Company require that they dispense
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3. Vending Machine Specifications for vending machines made by the Newton Machine Company require that they dispense amounts of coffee having a mean of 12 oz.
Listed below are amounts of coffee (in ounces) randomly selected from different machines.
Use these sample results to construct a 95% confidence interval for the mean amount of coffee in all dispensed cups. Does this confidence interval suggest that the machines are working properly? Is there anything else about the data suggesting that there is a problem?
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