1.We are examining the relationship between the number of cold calls a broker makes and the number of accounts the firm as a whole opens. We have determined that the correlation coefficient is equal to 0.70, based on a sample of 16 observations. Is the relationship statistically significant at a 10 percent level of significance, and why or why not? The relationship is: A) not significant; the critical value exceeds the t-statistic by 1.91. B) significant; the t-statistic exceeds the critical value by 1.91. C) significant; the t-statistic exceeds the critical value by 3.67. D) not significant; the critical value exceeds the t-statistic by 4.21.
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发表于 2008-4-1 13:09
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