答案和详解如下： 25、Correct answer is B "Hypothesis Testing," Richard A. Defusco, Dennis W. McLeavey, Jerald E. Pinto, and David E. Runkel 2008 Modular Level I, Vol. 1, pp. 456-464 Study Session 3-11-a, c define a hypothesis, describe the steps of hypothesis testing, interpret and discuss the choice of the null hypothesis and alternative hypothesis, and distinguish between one-tailed and two-tailed tests of hypotheses; define and interpret a decision rule and the power of a test, and explain the relation between confidence intervals and hypothesis tests Because the alternative hypothesis is that the correlation is different from zero (either above or below zero), the analyst conducted a two-tailed test. Because the test statistic is greater than either of the critical values, the analyst can reject the null hypothesis.
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发表于 2008-11-27 16:33
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