You are surveying students to find out their opinion of the quality of food served in the school cafeteria. You decide to poll only those students who buy hot lunch on a particular day. Is your sample random? Explain.
No, the sample is not random because it only includes students who buy hot lunch on a particular day, which may not be representative of the entire student population who eat at the cafeteria. It is possible that students who bring their own lunch or buy items other than hot lunch may have a different opinion of the quality of food served in the cafeteria. A random sample would be one that includes all students who eat at the cafeteria, regardless of what they purchase.
