Estimate the population mean
A population is normal with a variance of 17. Suppose you wish to estimate the population mean, u. Find the sample size needed to assure with 68.26% confidence that the sample mean will not differ from the population mean by more than 3 units.
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Compute the standard error of the estimate of the data below.
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A sample is marked as containing 42.7% calcium carbonate by mass.What mass of calcium carbonate is contained in 33.9 grams of the sample?
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