Exam 11: Probability

Determine whether the events are independent. -A bag contains 14 red and 13 green marbles. Two marbles are drawn without replacement. Are the events "first marble is red" and "second marble is green" independent events?

Mendel found no dominance in snapdragons with respect to red and white flower color. When pure red (RR)and pure white (rr)parents are crossed, the resulting Rr combination (one of each Gene)produces second generation offspring with pink flowers. Suppose one of these second Generation pinks is crossed with a pure red. What is the probability that the resulting snapdragon Will have red flowers?

Find the indicated probability. -The table below describes the smoking habits of a group of asthma sufferers. If one of the 894 subjects is randomly selected, find the probability that the person chosen is a woman given that the person is a light smoker.

An IRS auditor randomly selects 3 tax returns from 55 returns of which 10 contain errors. What is the probability that she selects none of those containing errors?

Determine whether the events are independent. -In a city, 20% of the people drive Cadillacs and 29% of business executives drive Cadillacs. Are the events "person drives a Cadillac" and "person is an executive" independent?

Decide whether or not the events are mutually exclusive. -Having good reading skills and having good math skills

Find the probability. -In one town, 34% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that they are both Democrats.

Find the probability. -A fair die is rolled. What is the probability of rolling an odd number or a number less than 3?

Find the probability. -A fair die is rolled. What is the probability of rolling a 3 or a 6?

Find the probability. -A bag contains 5 red marbles, 2 blue marbles, and 1 green marble. What is the probability that a randomly selected marble is not blue?

Mendel found no dominance in snapdragons with respect to red and white flower color. When pure red (RR)and pure white (rr)parents are crossed, the resulting Rr combination (one of each Gene)produces second generation offspring with pink flowers. Suppose one of these second Generation pinks is crossed with a pure white. What is the probability that the resulting Snapdragon will have white flowers?

The distribution of B.A. degrees conferred by a local college is listed below, by major. What is the probability that a randomly selected degree is in Engineering?

Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards. -In bridge, all cards in one suit

Find the indicated probability. -The table below describes the smoking habits of a group of asthma sufferers. If one of the 1017 subjects is randomly selected, find the probability that the person chosen is a nonsmoker given that the person is a woman.

Find the probability. -A class consists of 24 women and 58 men. If a student is randomly selected, what is the probability that the student is a woman?

Find the probability. -A bag contains 19 balls numbered 1 through 19. What is the probability that a randomly selected ball has an even number?

Find the indicated probability. -The probability that Luis will pass his statistics test is 0.98. Find the probability that he will fail his statistics test.

Find the indicated probability. -The table shows the distribution of family size in a certain U.S. city Family Size Probability 2 0.451 3 0.243 4 0.190 5 0.071 6 0.027 7+ 0.018 A family is selected at random from the city. Find the probability that the size of the family is less than 5. Round approximations to three decimal places.

Determine whether the events are independent. -A balanced die is rolled twice. Are the events "the sum of the two rolls is 8" and "the first roll comes up 3" independent ?

A basketball player hits three-point shots 46% of the time. If she takes 4 shots during a game, what is the probability that she misses the first shot and hits the last three shots?