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VARVARA [1.3K]
3 years ago
13

A previous analysis of paper boxes showed that the the standard deviation of their lengths is 9 millimeters. a packer wishes to

find the 98% confidence interval for the average length of a box. how many boxes does he need to measure to be accurate within 3 millimeters?
Mathematics
1 answer:
maksim [4K]3 years ago
7 0
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