Salaries of 38 college graduates who took a statistics course in college have a mean, x, of $60,700. Assuming a standard deviation, o, of $12,775, construct a 95% confidence interval for estimating the population mean .

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called

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.

What is negative 3/9 times negative 2/8 ?