gymnastemily18
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HELP QUICK! BRAINLIEST! EXPLAIN YOUR ANSWER!

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?

A. The experimental probability is 50%.
B. The experimental probability is 75%.
C. The theoretical probability is 75%.
D. The theoretical probability is 50%.

Respuesta :

Well, since we have not actually done this experiment, we cannot use a experimental probabiltity, so we can say the correct answer is: 
D. The theoretical probability is 50%.
bcalle
When an experiment was conducted and the results are from an actual experiment or actual data set, it is experimental probability.
When the probability is based on what is SHOULD be, as in flipping a coin should be 50% heads and 50% tails, it is theoretical probability.
One-half represents 50%. This is data from an actual club so I would say it is experimental, LETTER A.