A random sample of 20 observations selected from a normal population produced = 72.6 and s2

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A random sample of 20 observations selected from a normal population produced = 72.6 and s2 = 19.4.
a. Test H0: µ = 80 against Ha: µ < 80. Use α = .05.
b. Test H0: µ = 80 against Ha: µ ≠ 80. Use α = .01.

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Statistics For Business And Economics

ISBN: 9780321826237

12th Edition

Authors: James T. McClave, P. George Benson, Terry T Sincich

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Question Posted: Apr 07, 2016 08:00 AM

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A random sample of 20 observations selected from a normal population produced = 72.6 and s2

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a H 0 80 H a 80 The test statistic is t The rejection region requires a 05 in the low...View the full answer

Statistics For Business And Economics

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