Classify the statement as an example of classical probability, empirical probability, or subjective probability.
a. The probability of randomly selecting 5 cards of same suit (a flush) from the standard deck is about 0.0005.
b. The probability of the person from the United States being left-handed is 11%.
c. The chance that a randomly chosen person in the United States is between 15 and 24 years old is about 14%.