Learning psychologist Edward Tolman wanted to determine if mice learned a maze through trial and error or if the developed a “cognitive map” of the maze. Tolman placed a rat in the center of a circular space with 4 alternative corridors. If the rats were truly “guessing” a path, they should try each corridor an equal number of times. However, if the rats were developing a cognitive map, they should go down the far-right corridor more frequently than the others and go directly to the cheese. Original Right Observed 8 12 Expected 16 16 . a.What are the null and alternative hypotheses? b.Perform the analysis manually or using Excel or r. c.Why is a Chi-Square called goodness of fit rather than a hypothesis test d.What did Tolman find?
Learning psychologist Edward Tolman wanted to determine if mice learned a maze through trial and error or if the developed a “cognitive map” of the maze. Tolman placed a rat in the center of a circular space with 4 alternative corridors. If the rats were truly “guessing” a path, they should try each corridor an equal number of times. However, if the rats were developing a cognitive map, they should go down the far-right corridor more frequently than the others and go directly to the cheese.
|
Original |
Right |
Observed |
8 |
12 |
Expected |
16 |
16 |
.
a.What are the null and alternative hypotheses?
b.Perform the analysis manually or using Excel or r.
c.Why is a Chi-Square called goodness of fit rather than a hypothesis test
d.What did Tolman find?
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