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24-05-2023
Mathematics

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16. Use the following information for Questions 16-17. The average age of adults in the US is roughly 39 years with a standard deviation of 12 years. Calculate the required sample size so that the average age in the sample is within 4 years of the population mean 95% of the time. a. 30 b. 35 c. 40 d. 45 17. Calculate the required sample size so that the average age in the sample is within 5% of the population mean 95% of the time. (Hint: Start by finding 5% of 39) a. 100 b. 145 c. 200 d. 265

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