A sample of 64 observations is selected from a normal population. The sample mean is 215, and

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A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.

H0: µ ≤220

H1: µ <220

(a) Is this a one- or two-tailed test?

(b) What is the decision rule?

(d) What is your decision regarding H0?

(e) What is the p-value? Interpret it.

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Statistical Techniques in Business and Economics

ISBN: 978-0078020520

16th edition

Authors: Douglas Lind, William Marchal

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Question Posted: Dec 10, 2014 07:38 AM

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A sample of 64 observations is selected from a normal population. The sample mean is 215, and

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a Onetailed because the alternate hypothesis indicates a less t...View the full answer

Statistical Techniques in Business and Economics

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