Which of the following are examples of inferential statistics?

Check all that apply.

A. Finding the average (mean) of a set of numbers
B. Testing every lightbulb produced by a company to confirm that each one works
C. Testing random samples of lightbulbs produced by a company to confirm they work
D. Predicting whom you will someday marry
E. Testing a new drug on a random sample of patients to see how effective it is at curing the flu