Fifty rats are randomly divided into Group A and Group B. The rats in Group A are given a series of training trials that differ in several respects from those given to Group B. Then each rat is given a test trial in which it has a choice of leaving the maze through a dark exit or a light exit.The following are the results for the test trial:
You wish to determine whether rats trained like those in Group A differ from Group B rats in their exit preferences.
(a) Give H0 and HA in terms of the proportions preferring the dark exit (use symbols).
(b) Compute X2 . Use .05.
(c) Draw final conclusions.
(d) Calculate the phi coefficient and odds ratio.