Question

For a few weeks, a music producer kept track of newly released songs on a music streaming website. He recorded the music genre and number of times the song was played on its release date.
Country Rock
0-500 plays 7 5
501-1,000 plays 5 3
What is the probability that a randomly selected song had 501-1,000 plays and was rock?
Simplify any fractions.

Answer 1

The total number of songs in the sample is 7 + 5 = 12.
The number of songs that had 501-1,000 plays and were rock is 3.

So, the probability that a randomly selected song had 501-1,000 plays and was rock is:
3/12 = 1/4 = 0.25