Question

tyler surveyed the first 38 students in the lunch line. is this a random sample of the students in the school? yes no

Explanation:

A random sample requires that every student in the school has an equal chance of being selected. Surveying only the first 38 students in the lunch line means students not in that part of the lunch line (or not in lunch line at that time) have no chance of being selected. So it's not a random sample.

Answer:

no