# Hlt 362v Workbook Exercise 18

698 Words Sep 25th, 2015 3 Pages
1. In comparing men and women, which group had higher body image scores? Provide a rationale for your answer. Women had higher body image scores with a X_73.07 compared to men with a X_60.22. With this study, the higher the mean, the greater the body image scores. Thus, the higher mean for women’s body image scores showed that women have stronger body image scores than men.

2. Men had higher variability in weight change over the last 12 months when compared to women. Is this statement true or false? Provide a rationale for your answer.

True. SD indicates variability or spread of scores. Men had higher variability in scores with a SD 22.40 versus women with a SD 13.63. This shows that women had less variation in their
Round your answer to two decimal places.

Assuming that the distribution of female body image scores is normal, 99% of the women’s scores fall between (29.39, 116.75).
Calculation: X_2.58(SD) X_73.07 SD 16.93
73.07 −2.58(16.93) 73.07 −43.68 29.39 73.07 2.58 (16.93) 73.07 43.68 116.75
Expressed as (29.39, 116.75)

7. Assuming that the distribution is a normal curve, 99% of men were between what ages? Round your answer to two decimal places.

Assuming that the distribution of men’s ages in the sample is normal, 99% of the men were between the ages
(21.04, 63.36).
Calculation: X_2.58 (SD) X_42.2 SD 8.2
42.2 −2.58(8.2) 42.2 −21.16 21.04 42.2 2.58(8.2) = 42.2 21.16 63.36
Expressed as (21.04, 63.36)

8. Assuming that the distribution is a normal curve, 95% of men were between what ages? Round your answer to two decimal places.

Assuming that the distribution of men’s ages in the sample is normal, 95% of the men were between the ages
(26.13, 58.27).
Calculation: X_1.96 (SD) X_ 42.2 SD 8.2
42.2 −1.96(8.2) 42.2 −16.07 26.13 42.2 2.58(8.2) 42.2 16.07 58.27
Expressed as (26.13, 58.27)

9. Did HIV-positive participants have signifi cantly higher body image scores than those with AIDS? Provide a rationale for your response.

No. It shows in the Study Results, HIV-positive participants’ mean score for body image was 68 compared to 60.5 for those with AIDS. These two groups were