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A company makes resistors by the millions, and an engineer oversees quality control. She picks calculates the mean. She continues to do this until sample 15, and calculates the mean. The average of all the means is 10.03 k2. The sample standard deviation of the sample means is 8.40 (a) Calculate the population mean. (b) Estimate the overall population standard deviation. Give your answer in Ω to three significant digits

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