Statistics and Probability

A pair of dice is rolled. What is the probability of getting a sum of 12? NO A pair of dice is rolled. Find the probability of rolling a) a sum not more than 9, b) a sum not less than 10, c) a sum between 3 and 7 (exclusive). Kristina Karganova invites 14 relatives to a party: her mother, 2 aunts, 3 uncles, 4 brothers, 1 male cousin, and 3 female cousins. If the chances of any one guest W arriving first are equally likely, find the probabilities that the first guest to arrive is as follows. (a) A brother or an uncle (b) A brother or a cousin (c) A brother or her mother A marble is drawn from a box containing 5 yellow, 2 white, and 19 blue marbles. Find the odds in favor of drawing the following. (a) A yellow marble (b) A blue marble (c) A white marble (d) Not drawing a white marble Suppose that 10% of a certain batch of calculators have a defective case, and that 16% have defective batteries. Also, 3% have both a defective case and defective batteries. A calculator is selected from the batch at random. Find the probability that the calculator has a good case and good batteries