Psychology experiments sometimes involve testing the ability of rats to navigate mazes. The mazes are classified according to difficulty, as measured by the mean length of time it takes rats to find the food at the end. One researcher needs a maze that will take rats an average of about one minute to solve. He tests one maze on several rats, collecting the times shown below, in seconds.

C

onduct a One-Sample t test to determine whether the mean time for the rats to find the food, ie run the maze, differs from 60 seconds. Let ?=0.01. Use SPSS

38.4	62.5	62.8	50.4	52.8	55.1	55.5	40.9	93.8	69.2	56.3
46.2	38.0	33.9	35.0	60.1	57.6	49.5	44.3	47.9	46.2

1. Based on the given information, select the most appropriate Research Question for the situation.

A. Is there sufficient evidence that the mean time for the rats to find the food is different that one minute?

B. None of these is at all appropriate as a research question for the situation.

C. Is there sufficient evidence that the mean time for the rats to find the food is less than one minute?

D. Is there sufficient evidence that the mean time for the rats to find the food is more than one minute?

2. Choose the correct statistical hypotheses for this situation

H : M time 60 H : M time # 60 Ho : M time 2 60 Ho : A time = 1 C. D. H : M time