1. Slide 5- 1 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Active Learning Lecture Slides For use with Classroom Response Systems Elementary Statistics Eleventh Edition and the Triola Statistics Series by Mario F. Triola Chapter 5: Discrete Probability Distributions

2. Slide 5- 2 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Identify the given variable as being discrete or continuous: the number of oil spills off the Alaskan coast. A. Continuous B. Discrete

3. Slide 5- 3 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Identify the given variable as being discrete or continuous: the number of oil spills off the Alaskan coast. A. Continuous B. Discrete

4. Slide 5- 4 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Determine if the following is a probability distribution. A.Yes B.No

5. Slide 5- 5 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Determine if the following is a probability distribution. A.Yes B.No

6. Slide 5- 6 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Find the mean of the given probability distribution. A.1.50 B.1.73 C.1.60 D.2.00

7. Slide 5- 7 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Find the mean of the given probability distribution. A.1.50 B.1.73 C.1.60 D.2.00

8. Slide 5- 8 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. A contractor is considering a sale that promises a profit of $38,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $16,000 with a probability of 0.3. What is the expected profit? A. $26,600 B. $22,000 C. $37,800 D. $21,800

9. Slide 5- 9 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. A contractor is considering a sale that promises a profit of $38,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $16,000 with a probability of 0.3. What is the expected profit? A. $26,600 B. $22,000 C. $37,800 D. $21,800

10. Slide 5- 10 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Use the binomial probability formula to find the probability of x successes in n trials given the probability p of success on a single trial. n = 12, x = 5, p = 0.25 A. 0.103 B. 0.082 C. 0.091 D. 0.027

11. Slide 5- 11 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. Use the binomial probability formula to find the probability of x successes in n trials given the probability p of success on a single trial. n = 12, x = 5, p = 0.25 A. 0.103 B. 0.082 C. 0.091 D. 0.027

12. Slide 5- 12 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. The number of calls received by a car towing service averages 16.8 per day (per 24 hour period). After finding the mean number of calls per hour, use a Poisson Distribution to find the probability that in a randomly selected hour, the number of calls is 2. A. 0.08516 B. 0.13383 C. 0.12166 D. 0.15208

13. Slide 5- 13 Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved. The number of calls received by a car towing service averages 16.8 per day (per 24 hour period). After finding the mean number of calls per hour, use a Poisson Distribution to find the probability that in a randomly selected hour, the number of calls is 2. A. 0.08516 B. 0.13383 C. 0.12166 D. 0.15208