Confidence interval estimate for a population mean
A 90% confidence interval estimate for a population mean was computed to be (49.3, 67.9). Determine the mean of the sample, which was used to determine the interval estimate (show all work).
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The purchasing department of major company has 100 employees, 22 of whom have no children, 50 of whom have exactly one child, and 28 of whom have exactly two children. Calculate the mean number of children, Calculate the median of the children.
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The CEO of an oil company has asked for your help in analyzing a confidential data associated with drilling holes. It is known that the diameter of the hole is normally distributed with population mean µ = 2 inches and standard deviation &si
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