A disc jockey at a school dance has equal numbers ofcountry, rock, and pop songs that she randomly selects from.She designs a simulation to estimate the probability that thenext three songs she plays are all country songs.Which simulation design could she use to estimate theprobability?

From the statement, we know that the disc jockey has an equal number of country, rock and pop songs. Because each genre has the same number of songs, each has the same probability of being selected.

(1) If she wants to design a simulation to estimate a probability, each genre must have the same probability of being selected when the simulation is run.

(2) From the list of options, we see that the only simulation that satisfies these conditions is option A, rolling a cube.

Answer

Option A