The Statistical Abstract of the United States (109th edition) reported that the average cost per day of owning an automobile in the United States is $7.62 with standard deviation of $1.77. This includes the cost of the car, general maintenance, gasoline, and insurance. A random sample of 54 students who own cars found the average cost per day to be $6.78. Is the college student's average daily expense less than the national average

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

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.