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In trying to understand the impacts of caffeine on consumer spending, researchers in France ran the following experiment: 145 people walking into a home goods

In trying to understand the impacts of caffeine on consumer spending, researchers in France ran the following experiment: 145 people walking into a home goods store were offered a welcome beverage: an espresso (caffeinated) or an option of a non-caffeinated drink. 58 shoppers chose the espresso while 87 went for the non-caffeinated alternative. On average the caffeinated shoppers spent$18 with a standard deviation of$29, while the non- caffeinated folks spent on average$9 with a standard deviation of$16.

Which statement is correct?

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The relevant t-stat for the difference in averages is greater than 3 in absolute value

The relevant t-stat for the difference in averages in less than 2 in absolute value

The relevant t-stat for the difference in averages in less than 3 in absolute value.

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