Machine can be varied without changing standard deviation

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A machine fills a 3 pound coffee can with a measured amount of coffee. The weight of coffee in each can has a known normal distribution and a standard deviation. By law, the contents of any product must be contained in 90% of the products sold. In this case, 90% of the 3 pound coffee cans must contain at least 3 pounds of coffee. Assuming that the set point of t machine can be varied without changing the standard deviation of 2.9 ounces, what must that set point be to satisfy the 90% rule?

Reference no: EM131794982

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