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A coffee company is attempting to make certain that all its packaged coffee beans contain the...

A coffee company is attempting to make certain that all its packaged coffee beans contain the same amount of coffee bean by weight. Over the last few days, it has taken several samples. The overall average weight of the sampled packages is 16 ounces, with an average range of 4 ounces. Each sample was of five packages.

a. what would be the 95.5% upper and lower control limits for an x chart?

b. what would be the 95.5% upper and lower control limits for an R chart?

math   Statistics-And-Probability   
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Answer #1

5 AZ 88 02 73 58 48 42 37 34 31 29 1100000000 瓦8. -X02 4 n234 6789 5 3

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