SGS-CHL5601H. Module 5A Glossary.
Students have difficulty remembering the difference between a type on and type two error.
The analogy is to look out a very small window and see only clouds. However the sky is clear blue with only one cloud in it. Because of chance and your restricted sample you conclude that it is a cloudy day. Your conclusion is different from those coming from outdoors yet you are convinced of your findings. The difference in findings is by chance and the small sample on which your conclusion is based.