NO.PZ202109130200004501
问题如下：
Based on Exhibit 1, Olabudo should:
选项：
A.conclude that the inflation predictions are unbiased B.reject the null hypothesis that the slope coefficient equals one C.reject the null hypothesis that the intercept coefficient equals zero解释：
A is correct. We fail to reject the null hypothesis of a slope equal to one, and we fail to reject the null hypothesis of an intercept equal to zero. The test of the slope equal to 1.0 is
The test of the intercept equal to 1.0 is
Therefore, we conclude that the forecasts are unbiased.
test of the slope=−1.09677 <2.002 , not reject H0, therefore slope=1
test of the intercept=0.5<2.002 , not reject H0, therefore intercept=0
