NO.PZ2023062701000004
问题如下：
What is the approximate expected number of false positives when running 100 tests with a significance level of 0.05?
选项：
A.
0
B.
1
C.
5
解释：
If we run 100 tests with a 5% significance level, we can expect approximately 0.05 (5%) of the time to reject the null hypothesis, even if the null is true. This means we would have around 5 false positives, on average.
false positive是什么？
