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 counts in Table 5.16 were reported for the number of participants increasing their level of exercise for the 84 participants in the diet as-usual-group and 73 participants in the nondieting group. Use the summary counts in Table 5.16 to answer the following:

(a) Estimate the proportion of the diet-as-usual population who will increase their exercise level.

(b) Estimate the proportion of the nondieting population who will increase their exercise level.

(c) Estimate the difference in the proportion of individuals who will increase their exercise level for the diet-as-usual and nondieting populations.

(d) Compute the estimated standard error of the difference of these proportions.

(e) Compute the bound on the error of estimation for estimating the difference of these proportions.