NO.PZ201904080100002103
问题如下:
The database of a large information organization divides the fund managers into good and medium. The data shows that the probability of a good fund manager and a medium fund manager outperforming the market is 75% and 55% respectively, assuming that the performance of the fund managers is independent of his prior year performance. And the database manager believes that only 10% of fund managers are good. Suppose a new fund manager has consistently outperformed the market for three consecutive years since he started.
3. Using the frequentist approach, what is the probability that the new manager will outperform the market next year?
选项:
A.55.0%.
B.58.5%.
C.75.0%.
D.100.0%.
解释:
D is correct
考点:根据样本预测
解析:The frequentist approach就是根据最近的样本来预测未来。本题中由于这位新的基金经理的样本是过去三年的数据,而且每年都跑赢大盘,所以根据样本他明年还是可以跑赢大盘,故答案为100%
请问这道题的思路不是应该按照贝叶斯公式计算么?