Mathematics, 08.04.2020 01:35 timothyallenhall2006
How many parts should be sampled in order to estimate the population mean to within 0.1 millimeter (mm) with 95% confidence? Previous studies of this machine have indicated that the standard deviation of lengths produced by the stamping operation is about 1.8 mm.
Answers: 2
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
.
, so 
is the standard deviation of the population and n is the size of the sample.
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How many parts should be sampled in order to estimate the population mean to within 0.1 millimeter (...
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