Eight subjects 1, 2, 3, 4, 5, 6, 7, ·and 8 are tested with six different hearing aids A, B, C. D, E, and F. Two subjects were tested in each category of hearing loss denoted by "severe," "marked," "some," and "lightn". The data are the number of mistakes made in a hearing test using the various hearing aids. Analyze these data. What do you conclude? What type of experimental design is this? How many component variances are there?
