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 …show more content…
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
7. Among freshmen at a certain university, scores on the Math SAT followed the normal curve, with an average of 550 and an SD of 100.
Agliata, D., & Tantleff-Dunn, S., (2004). The Impact of Media Exposure on Males’ Body Image.
t = −3.15 describes the difference between women and men for what variable in this study? Is this value significant? Provide a rationale for your answer.
An intelligence test for which the scores are normally distributed has a mean of 100 and a standard deviation of 15. Use this information to describe how the scores are distributed.
B. 95% confidence intervals for the proportion of all students, the proportion of all male students, and the proportion of all female students who were involved in copying off the Internet is provided in the following table.
18. Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z scores:
One student’s Math score was 70 and the same individual’s English score was 84. On which exam did the student
Example 11.12 (p. 428) studies hangover symptoms in college students (Slutske et al., 2003). The students answered questions about alcohol use and hangovers, including a count of how many out of a list of 13 possible hangover symptoms that they had experienced in the past year. For the 470 men, the mean number of symptoms was 5.3; for the 755 women, it was 5.1. The standard deviation was 3.4 for each of the two samples.
compared to men where the percentage is lower, the same result has been found in
Tiggemann, M. (2004). Body image across the adult life span: Stability and change. Body Image, 1, 29–41.
Fry Brothers heating and Air Conditioning, Inc. employs Larry Clark and George Murnen to make service calls to repair furnaces and air conditioning units in homes. Tom Fry, the owner, would like to know whether there is a difference in the mean number of service calls they make per day. Assume the population standard deviation for Larry Clark is 1.05 calls per day and 1.23 calls per day for George Murnen. A random sample of 40 days last year showed that Larry Clark made an average of
This raises the question about gender difference and the concept of body image and prevalence of
The factors that affect the dissatisfaction with body image are that of the ideals of