Homework assistance for accounting students. Refer to the Journal of Accounting Education (Vol. 25, 2007) study of assisting accounting students with their homework, Exercise 15.24 (p. 15-18). A completely randomized design was employed, with students randomly assigned to receive one of three different levels of assistance on the homework: (1) the completed solution, (2) check figures at various steps of the solution, and (3) no help at all. The response variable of interest to the researchers was the knowledge gain (or, test score improvement). The data (simulated from descriptive statistics published in the article) are saved in the file. Analyze the data with the appropriate nonparametric method. Interpret the results, practically. Does your conclusion agree with the inferences drawn from the parametric analysis in Exercise 9.30 (p. 531)?