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sample size 的计算

The volume for the packaging of ice-cream cannot vary more than 3 oz for a 64 oz container.
The packaging machines have a process variation of 1 oz.

What is the sample size required to estimate the mean package volume at a confidence level of 99% for power values of 0.7, 0.8 and 0.9?
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lawrence600 (威望:0) - BB

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