The business college computing center wants to determine the proportion of business students who have personal computers (pcʹs) at home. if the proportion exceeds 25%, then the lab will scale back a proposed enlargement of its facilities. suppose 200 business students were randomly sampled and 65 have pcʹs at home. find the rejection region for this test using α = 0.01.

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.