g Suppose that three hypothesis tests are carried out, each using significance level 0.05. What is the worst-case probability of a type I error in at least one of these tests?

The worst-case probability is 0.05

Step-by-step explanation:

The given significance level () = 0.05

since Probability of a type I error is

∴ P (type I error) = 0.05

0.05 will be the worst-case probability of a type I error in at least one of the tests.

linear pair postulates