Errors with Cheese Suppose you are testing someone to see whether he or she can tell goat cheese from cheddar cheese.
You use many bite-sized cubes selected randomly, half from goat cheese and half from cheddar cheese. The taster is blindfolded.
The null hypothesis is that the taster is just guessing and should get about half right.
When you reject the null hypothesis when it is actually true, that is often called the first kind of error.
The second kind of error is when the null is false and you fail to reject. Report the first kind of error and the second kind of error.