25、An analyst conducted a significance test to determine if the relationship between two variables was real or the result of chance. His null hypothesis is that the population correlation coefficient is equal to zero and his alternative hypothesis is that the population correlation coefficient is different from zero. He developed the following information: Value of the test statistic 2.8092 Critical value at the 0.05 significance level
1.96 Critical value at the 0.01 significance level
2.58 The analyst conducted a: A. one-tailed test and can reject his null hypothesis. B. two-tailed test and can reject his null hypothesis. C. one-tailed test and cannot reject his null hypothesis. D. two-tailed test and cannot reject his null hypothesis. | 
发表于 2008-11-5 16:35
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