Question: Steven Schmidt(1994) conducted a series of experiments examining the effects of humor on memory. In one study, participants were given a mix of humorous and non humorous sentences and significantly more humorous sentences were recalled. However, Schmidt argued that the humorous sentences were not necessarily easier to remember, they were simply preferred when participants had a choice between the two types of sentences. To test this argument, he switched to an independent measures design in which one group got a set of exclusively humorous sentences and another group got a set of exclusively non humorous sentences. The following data are similar to the results from the independent measures study.

Humorous Sentences Non Humorous

4 5 2 4 6 3 5 3

6 7 6 6 3 4 2 6

2 5 4 3 4 3 4 4

3 3 5 3 5 2 6 4

Do the results indicate a significant difference in the recall of humorous versus non humorous sentences? Use a two-tailed test with a=.05.