The following data are from an experiment designed to investigate the perception of corporate ethical values among individuals who are in marketing. three groups are considered: management, research and advertising (higher scores indicate higher ethical values).
marketing managers marketing research advertising
9 4 7
8 4 8
7 3 7
8 3 6
9 4 7
7 3 7
use = .05 to test for a significant difference in perception among the three groups.1. calculate the value of the test statistic (to 2 decimals).