During the trip your parents drive 211.05 miles on different highways. You calculate that you spent 3.5 hours driving on the highways. What was the average speed your parents drove during that part of the trip

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected