The managing partner of a major consulting firm is trying to assess the effectiveness of expensive computer skills training given to all new entry-level professionals. In an effort to make such an assessment, she administers a computer skills test immediately before and after the training program to each of 40 randomly chosen employees. The pretraining and post training scores of these 40 individuals are recorded in the file P10_15.XLS. 

a. Using a 10% level of significance, do the given sample data support the claim that the organization’s training program is increasing the new employee’s working knowledge of computing?

b. Using a 1% level of significance, do the given sample data support the claim that the organization’s training program is increasing the new employee’s working knowledge of computing?