Myra supplies costumes to a number of theater companies. She recently provided 20 different hats, including 4 fedoras. Considering this data, how many of the next 15 hats requested from Myra's inventory should you expect to be fedoras? PLEASE HELP
I REALLY DONT UNDERSTAND.

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.