describe probability of simple and compound events.
describe A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52% had TVs and 21% had both a TV and a refrigerator. describe what's the probability that a randomly selected dorm room has?
1) A TV but no refrigerator?
2) A TV or a refrigerator, but not both?
3) Neither a TV nor a refrigerator?