There are 14 books on a shelf. 8 of these books are new. The rest of them are used.

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.

How can you find the mean absolute deviation (mad) for this set of data?

Find the solution to this system 2,1 1,-2 1,2 -1,2