Probability that the value of the sample mean

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A book shelf manufacturer claims that their largest bookshelves can withstand an average of 245 kilograms of books, with a standard deviation of about 26 kilograms. A sample of 33 bookshelves is selected and the weight they could withstand was measured. What is the probability that the value of the sample mean is less than 239.2 or greater than 250.8? What is the probability that the value of the sample mean is less than 237.6?

Reference no: EM132479364

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