NO.PZ202106160300004104
问题如下：
Is the relationship between the ratio of cash flow to operations and the ratio of net income to sales significant at the 0.05 level?
选项：
A.No, because the R2 is greater than 0.05 B.No, because the p-values of the intercept and slope are less than 0.05 C.Yes, because the p-values for Fand t for the slope coefficient are less than 0.05解释：
C is correct. The p-value is the smallest level of significance at which the null hypotheses concerning the slope coefficient can be rejected. In this case, the p-value is less than 0.05, and thus the regression of the ratio of cash flow from operations to sales on the ratio of net income to sales is significant at the 5% level.
B 错在什么地方？
