In a Recent Paper, the Authors Distinguish Between Spending Money

Multiple Choice

In a recent paper, the authors distinguish between spending money on experiences (such as travel) and spending money on material possessions (such as a car) . In an experiment to determine if the type of purchase affects how happy people are after the purchase has been made, 155 college students were randomly assigned to one of two groups. The students in the "experiential" group were asked to recall a time when they spent about $250 on an experience. They rated this purchase on three different happiness scales that were then combined into an overall measure of happiness. The students assigned to the "material" group recalled a time that they spent about $250 on an object and rated this purchase in the same manner. The mean happiness score was 5.62 for the experiential group and 5.44 for the material group. ​
Which of the following hypotheses should be tested to determine the author conclusion that, on average, "experiential purchases induced more reported happiness"?
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