Normal Population, Standard Deviation, Interval Estimates
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A) After sampling 1000 members of a normal population, you find xbar = 15,500 and s = 9,950. Estimate the population mean with 90% confidence.
b) Repeat part a assuming that you know that the population standard deviation is σ = 9,950
c) Explain why the interval estimates were virtually identical.
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This solution provides answers in Excel for various statistical questions.
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