32. Statistical training. The accounting firm described in Exercise 30 is interested in providing opportunities for its auditors to gain more expertise in statistical sampling methods. They wish to compare traditional classroom instruction with online self-paced tutorials. Auditors were assigned at random to one type of instruction, and the auditors were then given an exam. The table shows how the two groups performed. What do you conclude?

(Assume the assumptions for inference are met.)

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Program n Mean SD Traditional 296 74.5 Online 11.2 275 72.9 12.3