The manager of a consulting firm in Lansing, Michigan, is trying to assess the effectiveness of computer skills training given to all new entry-level professionals. In an effort to make such an assessment, he administers a computer skills test immediately before and after the training program to each of 20 randomly chosen employees. The pre-training and post-training scores of these 20 individuals are shown in the table below. 
-(A) Is this two-sample data or paired data. Explain your answer.
(B) Specify an appropriate hypothesis test.
(C) Using a 10% level of significance, do the given sample data support that the firm's training programs is effective in increasing the new employee's computer skills?
(D) Using a 1% level of significance, do the given sample data support that the firm's training programs is effective in increasing the new employee's working knowledge of computing?
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