Question

An experiment was conducted to study responses to different methods of taking insulin in patients with type I diabetes. The percentages of glycosolated hemoglobin initially and 3 months after taking insulin by nasal spray are given in the table below.

Patient Number                 Before                           3 Months After

      1                                    12                                     10.2

     2                                   7.7                                     7.9

      3                                   5.9                                      6.6

     4                                  9.5                                    10.4

      5                                  7.6                                      8.8

      6                                  8.6                                     9

     7                                 11                                        9.5

      8                                6.9                                       7.7

Conduct a two-sided Wilcoxon Sign Rank Test with alpha = 5% to determine if there is a significant difference in glycosolated hemoglobin after taking insulin by nasal spray. Note: Conduct your subtraction by Before – 3 Months After.

34. What is the critical value? a. 0 b. 2 c. 4 d. 6

35. What is the sum of the positive ranks (i.e. W+)? a. 36 b. 15.5 c. 24 d. 21.5

36. What is the sum of the absolute value of negative ranks (i.e. W-)? a. 15 b. 14.5 c. 24 d. 21

37. What is the test statistic? a. 36 b. 15 c. 14.5 d. 21.5

38. True or False: There is no significant difference in glycosolated hemoglobin in patients 3 months after taking insulin by nasal spray.

39. The ANOVA Post Hoc Analyses article discusses the liberality of the variety of the post hoc tests once a significant difference has been found after conducting an ANOVA. What does being a “liberal” test mean? a. Likely to result in a Type II error b. Lower power is adequate to conduct the post hoc c. Likely to result in a Type I error d. Smaller sample size is adequate to conduct the post hoc

40. What post hoc analysis mentioned in the paper is the most liberal? a. Tukey-Kramer HSD b. Fisher PLSD c. Scheffe d. SNK

Answer 1