Reconsider the previous exercise about contagious yawning and time of day. Th e results of this test are not significant. If this study were redone, what suggestions do you have that would help make the results significant?

Data from previous exercise

Student researchers wanted to see if it there was an association between the time of day and whether or not someone would yawn right aft er seeing another person yawn. To gather their data, they walked around campus at various times of day yawning at people and watched to see if the subjects yawned. The results are shown in the following table.

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Time of Day 8-11a 11a-2p 2-5p 5-8p Total Yes 25 29 38 107 Subject 15 18 15 75 14 28 yawned? No 14 Total 39 33 182 66 66 44