Question

Do people walk faster in an airport when they are departing​ (getting on a​ plane) or after they have arrived​ (getting off a​ plane)? An interested passenger watched a random sample of people departing and a random sample of people arriving and measured the walking speed​ (in feet per​ minute) of each. What type of study design is being​ performed?

Answer 1

Answer: This is an observational study

Explanation:

What is an observational study?

Observational studies are those studies in which a researcher will set their time apart to observe a particular action without interrupting it or changing it ; they observe it as it is without introducing anything or reducing anything from it.

A researcher above is just watching how people walk from or to the airplane without him making any interventions.