In the article “Experimental investigation of the effects of naturalistic dieting on bulimic symptoms: moderating effects of depressive symptoms” published in Appetite (Presnell et al., 2008), the summary statistics given in Table 5.15 on the variable Beck Depression Inventory (BDI) were reported for 84 participants in a dietas-

usual group and 73 participants in a nondieting group. Use the summary statistics in Table 5.15 to answer the following:

(a) Compute the estimated standard error of the sample mean for the diet-as-usual group.

(b) Compute the bound on the error of estimation of the sample mean of the dietas-

usual group.

(c) Compute the estimated standard error of the sample mean of the nondieting group.

(d) Compute the bound on the error of estimation for the sample mean of the nondieting group.