If PA 8000 PB 6500 and PA B 7800 then PBA a 8375 b Not enough information is

# If pa 8000 pb 6500 and pa b 7800 then pba a 8375 b

This preview shows page 12 - 14 out of 14 pages.

12.If P(A) = .8000, P(B) = .6500, and P(A ∪ B) = .7800, then P(B|A) =a. .8375b. Not enough information is given to answer this question.c. .9750d. .670013.If A and B are independent events with P(A) = .4 and P(B) = .6, then P(A ∩ B) =14.A six-sided die is tossed 3 times. The probability of observing three ones in a row is:15.The probability of the intersection of two mutually exclusive events:
16.If a penny is tossed four times and comes up heads all four times, the probabilityof heads on the fifth trial is:a. .5b. 1/32c. larger than the probability of tails.d. Zero.17.Which of the following statements is(are) always true?18.Initial estimates of the probabilities of events are known as:19.An experiment consists of tossing 4 coins successively. The number of sample points in this experiment is:20.The symbol ∪ shows the:a. sum of the probabilities of events.b. union of events.c. intersection of events.d. sample space.21.A lottery is conducted using three urns. Each urn contains chips numbered from0 to 9. One chip is selected at random from each urn. The total number of sample points in the sample space is:22.If A and B are independent events with P(A) = .0500 and P(B) = .6500, then P(A|B) =23.If P(A) = .3800, P(B) = .8300, and P(A ∩ B) = .5700; then P(A ∪ B) =
24.If P(A|B) = .3,a. P(A|B^C) = .7b. P(B|A) = .7c. P(A^C|B^C) = .7d. P(A^C|B) = .725.The probability of at least one head in two flips of a coin is:26.Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 3 customers and determining whether or not they purchase any merchandise. The number of sample points in this experiment is:27.Given that event E has a probability of .25, the probability of the complement of event E:28.The probability of an intersection of two events is computed using the:a. addition law.b. multiplication law.c. subtraction law.d. division law.29.If P(A) = .8500, P(A ∪ B) = .7200, and P(A ∩ B) = .6600, then P(B) =30.The "Top Three" at a racetrack consists of picking the correct order of the first three horses in a race. If there are 10 horses in a particular race, how many "Top Three" outcomes are there?

#### You've reached the end of your free preview.

Want to read all 14 pages?

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern