A factory produces a pack of peanuts. A researcher gets sample of 50 packs and computes the mean weight to be 57.2 grams. Based on a previous study, the population standard deviation is 0.15 grams. Round off all answers to two decimal places with complete solution.
a. Determine a point estimate for the population mean.
b. Use a 90% confidence to construct and interval estimate for the population mean.
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A factory produces a pack of peanuts. A researcher gets sample of 50 packs and computes the mean weight to be 57.2 grams. Based on a previous study, the population standard deviation is 0.15 grams. Round off all answers to two decimal places with complete
A large candy manufacturer in Slidell produces, packages, and sells packs of candy targeted to weigh 500 grams. The weight of a pack of candy is normally distributed with the mean μ=500 grams, but Parker Sanderson, a quality control manager working for the company, was concerned that the variation in the actual weights of the targeted 500-gram packs was larger than acceptable. That is, he was concerned that some packs weighed significantly less than 500-grams and some weighed significantly more...