Question

d or older. The other half are younger. What is the probability that a club member chosen at random will be under 21 years old?
Identify the resulting probability as theoretical or experimental.



One-half of the people in a chess club are adults 21 years old or older. The other half are younger. What is the probability that a club member chosen at random will be under 21 years old?

Answer 1

This is experimental probability.  The probability here is based on the people in the room instead of the number of people in the population.  You're taking actual physical data and conducting a probability experiment, so that makes it experimental.