Question

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1.5.19 A study in Psychonomic Bulletin and Review presented evidence that people use facial prototypes when they encounter different names." Participants were given two faces and asked to identify which one was Tim and which one was Bob. The researchers wrote that their participants "overwhelmingly agreed on which face belonged to Tim and which face belonged to Bob but did not provide the exact results of their study. Here we explore if students will correctly assign the name of Tim to the person on the left more than half the time in the long run. Which of the following states the appropriate null and alternative hypotheses in the context of this study? Null: The long-run proportion of times that people assign the name Tim to the face on the left is 50% Alt: The long-run proportion of times that people assign the name Tim to the face on the left is less than 50%. Null: The long-run proportion of times that people assign the name Tim to the face on the left is 50%. Alt: The long-run proportion of times that people assign the name Tim to the face on the left is more than 50%, O Null: The long-run proportion of times that people assign the name Tim to the face on the left is 50%, Alt: The long-run proportion of times that people assign the name Tim to the face on the left is different from 50%.

Answer 1

Ams!- The correct coors is (B) the neeme Tim Nell. The long run proportion of times that people assign face on the left is 50%, Alt - The long oun proportion of umes that people assign the same Tom left er Plzy 19-015 010720648 10:5705 to the face de om on the e more than 50%, 0.0721 30 ei No because p-value greater them 0'05 Z=1:46. This somber means that the proportion of the sample that chose tom is 96 standard deviations above the m mean of the oxell distribution CS Scanned with CamScanner