98 Bulimia study. Refer to Exercise 19. The “fear of negative evaluation” (FNE) scores for the 11 bulimic females and 14 females with normal eating habits are reproduced in the table below and saved in the BULIMIA file. The confidence interval you constructed in Exercise 19 requires that the variance of the FNE scores of bulimic females be equal to the variance of the FNE scores of normal females.

Conduct a test (at a = .05 ) to determine the validity of this assumption.

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Bulimic students: 21 Normal students: 13 36 13 10 20 25 19 16 13 8 19 12 16 21 23 18 == 24 13 14 11 19 7 10 15 20 Based on Randles, R. H. "On neutral responses (zeros) in the sign test and ties in the Wilcoxon-Mann-Whitney test." The American Statistician, Vol. 55, No. 2, May 2001 (Figure 3).