An analyst is interested in testing whether four populations have equal means. The following sample data have been collected from populations that are assumed to be normally distributed with equal variances:
Sample 1 = 9,6,11,14,14
Sample 2 = 12,16,16,12,9
Sample 3 = 8,8,12,7,10
Sample 4 = 17,15,17,16,13
Conduct the appropriate hypothesis test using a signifigance level equal to 0.05