Coffee brewing units with new german-made brewers

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Reference no: EM132185548

The third shift at Microsoft Windows' security unit in Redmond, Washington, is considering replacing its coffee brewing units with new German-made brewers. As the newest member of this elite Microsoft team, you have been assigned to investigate this proposal. Develop a 99 percent confidence interval for the average yield (cups per pound) for the new German coffee brewer. The margin of error should be no bigger than .3 (three-tenths of a cup). Based on experience with the current coffee makers, your best guess for the population standard deviation, sigma, is 1.2 cups. How large a sample do you need? Calculate the estimated sample size needed for the above scenario, using tables to demonstrate your method and findings. Write a 3–5 sentence summary that communicates your results to the business manager.

Reference no: EM132185548

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