1. 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Random Simulation Sampling Methods Types of Bias Experimts. & Studies

2. A large manufacturer of batteries knows that, historically, 3% of its batteries come off the production line defective, and the remaining batteries are in working condition. How could you assign numbers for a simulation to estimate the number of defective batteries in a box of 50?

3. (possible answer) 0-2: defective 3-99: working

4. Assume 10% of cars need need mechanical work in the first five years. Using 0: need work, 1-9: working fine, complete and summarize 2 trials to estimate the number of cars needing work out of 12. **Use one line per trial 5 7 8 2 16 3 5 0 87 6 3 0 9 1 3 0 2 69 0 6 5 74 8 1 9 2

5. Based on the simulation, there would be an average of 1.5 cars need work.

6. Sam is taking a quiz with 10 multiple choice questions. If he were to just guess on each question, assign numbers for a simulation to find the probability that he passes the quiz.

7. (Possible answer) 0: correct 1-3: incorrect

8. Suppose the underdog has a 30% of winning any given game. Using 0-2 for an underdog win, conduct a simulation of 4 trials to find the probability that they win a 3-game series. **Use one line per trial 5 8 9 2 2 1 0 7 0 4 3 9 0 8 6 2 9 7 3 2

9. Based on the simulation, the underdog has a 25% chance of winning the series.

10. Sally is a 65% free-throw shooter. Find the simulated probability that she makes 2 out of 2 on the line. **Use consecutive numbers for 5 trials. 5 7 8 2 16 3 5 0 87 6 3 0 9 1 3 0 2 69 0 6 5 74 8 1 9 2

11. Based on the simulation, Sally has a 40% chance of making both shots.

12. Which sampling method is used? Ask every 50 th person in line for the football game.

13. Systematic

14. Which sampling method is used? Randomly select 2 students from every class

15. Stratified

16. DAILY DOUBLE

17. Which sampling method is used? Put a survey in the school newspaper and have students turn them in to the office.

18. Voluntary Response

19. Which sampling method is used? Survey your twitter followers

20. Convenience

21. Which sampling method is used? Randomly select 5 teachers and survey everyone in those classes.

22. Cluster

23. Which type of bias is most likely to result from this sampling method? Call parents’ home phones while they are at work

24. Nonresponse

25. Which type of bias is most likely to result from this sampling method? Put a survey in the school newspaper and have students turn them in to the office.

26. Voluntary Response

27. Which type of bias is most likely to result from this sampling method? Randomly select 5 teachers and survey everyone in those classes.

28. Undercoverage

29. Which type of bias is most likely to result from this sampling method? Randomly select 50 student ID numbers from Synergy.

30. None

31. Which type of bias is most likely to result from this sampling method? In a survey, ask students to mark whether they are satisfied, dissatisfied, or very dissatisfied with the quality of food in the cafeteria.

32. Response

33. What is a placebo used for?

34. Control group; baseline measurement

35. Doc McStuffins asked her patient about what he had been eating lately. This is an example of what kind of study?

36. Retrospective

37. Splitting subjects into different age groups before randomly assigning treatments is an example of what element of experimental design?

38. Blocking

39. Giselle is experimenting with two new exercise methods. She randomly assigns both methods to a group of freshman boys and then to a group of freshman girls. It will be hard for her to analyze the results because age will be _____ with gender (one word).

40. Confounded

41. Researchers conducted an experiment on a new dietary supplement and results showed that the weight loss was statistically significant for those using the supplement. This means that the differences in weight loss (for supplement v. non-supplement was more than you’d expect from _____ alone. (2 words)

42. Natural Variation or Random Chance

43. BLANK