NO.PZ202109130200004503
问题如下：
Which of Olabudo’s observations of forecasting is correct?
选项：
A.Only Observation 1
Only Observation 2
Both Observation 1 and Observations 2
解释：
B is correct. The confidence level influences the width of the forecast interval through the critical t-value that is used to calculate the distance from the fore-
casted value: The larger the confidence level, the wider the interval. Therefore, Observation 1 is not correct.
Observation 2 is correct. The greater the standard error of the estimate, the greater the standard error of the forecast.
第一句话的意思不就是说confidence level确定，Intervall不变么？ 和这句解释“The larger the confidence level, the wider the interval. " 不是一个意思么？ 为啥不对呢？感谢
