NO.PZ202109130200004405
问题如下：
Using information from Exhibit 2, the 99% prediction interval for Amtex share return for Month 37 is best described as:
选项：
A. ±0.0053 B. ±0.0459 C. ±0.1279解释：
C is correct. The predicted share return is 0.0095 + 10.2354 × (-0.01)=0.0071. The lower limit for the prediction interval is 0.0071-(2.728 × 0.0469)=-0.1208, and the upper limit for the prediction interval is 0.0071 + (2.728 × 0.0469) = 0.1350.
A is incorrect because the bounds of the interval should be based on the standard error of the forecast and the critical t-value, not on the mean of the dependent variable.
B is incorrect because bounds of the interval are based on the product of the standard error of the forecast and the critical t-value, not simply the standard error of the forecast.
嘴上限制的区间是0.135根答案差异很大啊。选项的意思是哪个区间还盖在下限-上限吗？
