Which of the following are examples of statistical discrimination?

• If people avoided Chinese food restaurants at the beginning of the COVID pandemic because they believed Chinese people were more likely to carry the virus. (Note: we will have a guest lecture in a few weeks from a researcher who showed that this happened!)
• If a manufacturer doesn't hire men because he believes they are less productive than women.
• If doctors give Black people less pain medication than White people because they believe they have a higher pain tolerance.
• If a manufacturer doesn't hire Hispanic people because he doesn't like them.