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A softdrink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation of 2.0 oz. How large
A softdrink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation of 2.0 oz. How large a sample is needed if we wish to be 95% confident that our sample mean will be within 0.3 oz. of the true mean?
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