Which of the Following Is an Example of a Relative

Multiple Choice

Which of the following is an example of a relative frequency probability based on measuring a representative sample and observing relative frequencies of possible outcomes?

A) According to the late Carl Sagan, the probability that the earth will be hit by a civilization-threatening asteroid in the next century is about 0.001.
B) If you flip a fair coin, the probability that it lands with heads up is ½.
C) Based on a recent Newsweek poll, the probability that a randomly selected adult in the US would say they oppose federal funding for stem cell research is about 0.37.
D) A new airline boasts that the probability that its flights will be on time is 0.92, because 92% of all flights it has ever flown did arrive on time.