Refer to the Journal of Managerial Issues (Spring 2008) study of the impact of peer mentor training at a large software company, Exercise 9.55. Recall that participants volunteered to attend a 1-day peer mentor training session. The trainee's level of competence in peer mentoring (measured on a 7-point scale) was measured at three different times in the study:

1 week before training, 2 days after training, and 2 months after training. Data (simulated) for 15 trainees are displayed in the accompanying table. A Minitab nonparametric randomized block analysis is also provided below to compare the competence level distributions of the three time periods.

a. Locate the rank sums on the printout.
b. Use the rank sums to find the Friedman Fr statistic.
c. Locate the test statistic and associated p-value on the printout.
d. Conduct the test and give the appropriate conclusion in the words of the problem?

After 2 Days Trainee Before After 2 Months 6426 m +n-2373 522 Friedman Test: LEVEL versus PERIOD blocked by TRAINEE - 5.20 Dr - 2 P-0.074 1- 7.09 DE -2 p- 0.029 (adjuszed for ties) 0.029 (adguated for ties) Sum of FERIOD After2Days 18 After2Mona 15 tefore * Est Hedian 4.0000 4.0000 3.0000 Ranka 35.0 32.0 23.0 Grand median- 3.6667