NO.PZ201512020300000302
问题如下:
2. The 95 percent confidence interval for the regression coefficient for the pre-offer price adjustment is closest to:
选项:
A.0.156 to 0.714.
B.0.395 to 0.475.
C.0.402 to 0.468.
解释:
B is correct.
The 95% confidence interval is 0.435 ± (0.0202 × 1.96) = (0.395, 0.475).
老师 参数估计的置信区间为什么不用处于根号N