Unformatted text preview: d until failure) has population standard deviation
Find the sample size n such that the margin of error at 99% conﬁdence interval is no more than 60 thousand
characters printed until failure.
3. The net weight of packages of beef sold in a supermarket are labeled "3 pounds." A complaint has been made
by a customer that the packages of beef weigh less than 3 pounds. To investigate into this matter, the meat
inspector collected a sample of 36 packages, which reveals the mean weight to be 2.9 poun...
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