NO.PZ202306130100003104
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 F and 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 percent level.
我理解考点是检验b1=0，直接看t检验值7.988就可以下判断了，但是跟c选项的表述又不一样。
