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Chapter 3: Activity #4 Putting it All Together Dr. Hoover studied the effect of alcohol on the visual spatial abilities of rats by having them complete a maze during two sessions. One session the rats would not consume alcohol. Prior to the second session the rats would receive a small dose of alcohol. To determine changes in visual spatial abilities, Dr. Hoover timed how long it took the rats to complete the mazes on both occasions. Difference scores were calculated. Dr. Hoover hypothesized that if the time decreased the alcohol had no effect. If the time increased the alcohol may have impaired the rats\" visual spatial abilities, The following scores represent the difference in completion times from time #1 and time #2: -2, +5, 0, +1, -1, +1, +4,+2, +1, I], -1, +2 21. Draw a graph to illustrate the distribution of scores. 1:. Compute the mean for the difference scores. c.1d3'tify the mode of the distribution. a. Interpret the results: Does it appear that alcohol impaired the visual spatial abilities of the rats