Project #62680 - Help NOW please Statistics

Research has shown that people are more likely to show dishonest and self-interested behaviors in darkness than in a well-lit environment (Zhong, Bohns, & Gino, 2010). In one experiment, participants were given a set of 20 puzzles and were paid $0.50 for each one solved in a 5-minute period. However, the participants reported their performance and there was no obvious method for checking their honesty. Thus, the task provided a clear opportunity to cheat and receive undeserved money. One group of participants was tested in a room with dimmed lighting and a second group was tested in a well-lit room. The reported number of solved puzzles was recorded for each individual. The following data represent results similar to those obtained in the study.

 

 Well-Lit Room                                     

7, 8, 10, 6, 8, 5, 7, 12, 5

 

Dimly lit room

9,11,13,10,11,9,15,14,10

 

                                                                                

            a.         Is there a significant difference in reported performance between the two conditions? Use a two-tailed test with ?=.05.

            b.         Compute Cohens d to estimate the size of the treatment effect.

 

Subject Mathematics
Due By (Pacific Time) 03/17/2015
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