On a ship, 12 groups with three sailors in each group were chosen in a random manner, where the sailors in each group did similar work and were in the same division aboard the ship. In a random manner the sailors in each group were given treatment 1, 2, or 3, no two sailors from the same group receiving the same treatment. Treatment I was a "flu shot", treatment 2 was a "flu pill", and treatment 3 was a promise of 2 weeks extra leave if they did not catch the flu. As each sailor reported to sick bay with the flu, a report to the experimenter was made. At the end of the winter, these were the results Group Sailors with the Flu(By treatment number) 2 1,2 1,2,3 2,3 2 None 1,2 1,2 1 1,2,3 2 Do these results indicate a significant difference between the various treatments