Gab's exercise

Prepared by: Gab Cadiz (Sr-7, Sr-8)

Chi-squared

Problem:

1.) Sir X says that there is no way to “smartly” shotgun his multiple-choice “tests” because he randomly picks the letter for the correct answer. In other words, he favors no one letter over another. If the set of correct answers for his last 5 choice multiple-choice LT is:

1. A                        8.  A                       15. D                      22. B                      29. B

2. A                        9.  C                        16. C                      23. E                       30. A                      36. D

3. B                         10.B                       17. D                      24. B                      31. E                       37. A

4. E                         11. E                       18. A                      25. A                      32.  B                     38. A

5. D                        12. B                      19. B                      26. D                      33.  E                      39. B

6. B                         13. B                      20. A                      27. A                      34. D                      40. C

7. E                         14. C                      21. D                      28. C                      35. A

Was his statement, that he favors no one letter over another, true? Use chi-squared (level of significance 0.05) to test his claim.