a. A statistics practitioner randomly sampled 1,500 observations and found x = 14 and s = 25.
Question:
a. A statistics practitioner randomly sampled 1,500 observations and found x̄ = 14 and s = 25. Test to determine whether there is enough evidence at the 5% significance level to infer that the population mean is less than 15.
b. Repeat part (a) assuming that you know that the population standard deviation is σ = 25.
c. Explain why the conclusions produced in parts (a) and (b) are virtually identical.
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H 0 15 H 0 15 a Rejection region 1645 pvalue 0608 There is not enough evidence ...View the full answer
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Related Book For
Statistics For Management And Economics Abbreviated
ISBN: 9781285869643
10th Edition
Authors: Gerald Keller
Question Posted:
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