Lenny’s favorite radio station has this schedule: news: 15 min. commercials: 3 min. music: 42 min. If Lenny chooses a time of day at random to turn on the radio to his favorite station, what is the probability that the news will be on?
so the probability that the news will be on will bep = time the news schedule / total time the radio station will broadcast p = 15 / ( 15 + 3 + 42)p = 15 / 60p = 0.25 25 % is the probability that lenny will hear the news from his favorite station when she randomly turn on the radio