For a marketing class term project, Bob is investigating whether college seniors eat less frequently in fast-food chains than college freshmen. He asked 11 freshmen and 11 seniors to keep track of how many times they ate in a fast-food restaurant during the month of October. Assuming equal variances, can you conclude that the mean is significantly smaller for college seniors at the 5 percent level of significance?

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Seniors 105 5 57 18 8 19 9 8 Freshmen 16 9 74 8 1 7 6 20