Research Scenario #2: Data from the Motor Vehicle Department indicate that 65% of all licensed drivers are older than age 25. Information on the age of n = 50 people who recently received speeding tickets was sourced by a group of researchers interested in if the age distribution of individuals who get speeding tickets differs from the age distribution of licensed drivers. [10 marks total]

Data:

Age data

Participant N Age

1. 25 or younger

2. 25 or younger

3. 25 or younger

4. 25 or younger

5. 25 or younger

6. 25 or younger

7. 25 or younger

8 .25 or younger

9. 25 or younger

10. 25 or younger

11. 25 or younger

12. 25 or younger

13. 25 or younger

14. 25 or younger

15. 25 or younger

16. 25 or younger

17. 25 or younger

18. older than 25 years

19. older than 25 years

20. older than 25years

21. older than 25 years

22. older than 25 years

23. older than 25 years

24. older than 25 years

25. older than 25 years

26. older than 25 years

27. older than 25 years

28. older than 25 years

29. older than 25 years

30. older than 25 years

31. older than 25 years

32. older than 25 years

33. older than 25 years

34. older than 25 years

35. older than 25 years

36. older than 25 years

37. older than 25 years

38. older than 25years

39. older than 25 years

40. older than 25 years

41. older than 25 years

42. older than 25 years

43. older than 25 years

44. older than 25 years

45. older than 25 years

46. older than 25 years

47. older than 25 years

48. older than 25 years

49. older than 25 years

50. older than 25 years

2a) What is a research question that you can answer from these data? (1 mark)

2b) What scale of measurement was used for your measured variable? (1 mark)

2c) What is the appropriate analysis and why did you choose this analysis? (1 mark)

2d) What are the null and alternative hypotheses for this analysis? (1 mark)

2e) What assumptions (if any) must be tested to use this analysis? (2 marks)

• Test any assumptions as needed and include:
• (i) the jamovi output for these tests,
• (ii) a written statement of whether each assumption was met or not, AND
• (iii) a brief explanation of the evidence you used to make that decision.
• If no assumptions are needed for this test you may simply state this

2f) Run the chosen analysis and copy/paste or paste screenshots of the relevant jamovi output here. (1 mark)

2g) What decision can you make about the null hypothesis using = .05? (1 mark)

2h) Write conclusion of the results. (2 marks)