I am having trouble with part B-calculate the value of the test statistic

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 5 O O CO LD 4 5 8 5 5 6 CO 4 8 a. Compute the values identified below (to 2 decimal, if necessary). Sum of Squares, Treatment 31.00 Sum of Squares, Error 7.50 Mean Squares, Treatment 15.50 Mean Squares, Error 0.50 b. Use a = .05 to test for a significant difference in perception among the three groups. Calculate the value of the test statistic (to 2 decimals). 0.24