Hlt 362 Exercise 36 Essay - 839 Words

Exercise 36 1. The researchers found a significant difference between the two groups (control and treatment) for change in mobility of the women with osteoarthritis (OA) over 12 weeks with the results of F(1, 22) = 9.619, p = 0.005. Discuss each aspect of these results. The F-value is high enough at the 5% level of significance to suggest a significant difference between the control and treatment groups. The p-value 0.005 lt; 0.05 hence this suggests a rejection of the null hypothesis, meaning that the control and treatment groups are found to be different. 2. State the null hypothesis for the Baird and Sands (2004) study that focuses on the effect of the GI with PMR treatment on patients’ mobility level. Should the null†¦show more content†¦6. Can ANOVA be used to test proposed relationships or predicted correlations between variables in a single group? Provide a rationale for your answer. Yes this is one of the main functions of the ANOVA -- to say whether or not there exists a relationship or correlation between groups. Normally, if the p-value is less than the significance level there is a difference between the groups, and if the p-value is larger than the significance level there is no difference between the groups. 7. If a study had a result of F(2, 147) = 4.56, p = 0.003, how many groups were in the study, and what was the sample size? If K = number of groups in the study, and df = K - 1 then K = df+1 = 2+1 = 3. So there are 3 groups in the study. There are N - K number of participants so N = K+147 = 3+147 = 150 participants. 8. The researchers state that the sample for their study was 28 women with a diagnosis of OA, and that 18 were randomly assigned to the intervention group and 10 were randomly assigned to the control group. Discuss the study strengths and/or weaknesses in this statement. In my opinion, I would like to see a larger sample size. But I agree with the choice to put more participants into the intervention group rather than the control group. That is because I would be more interested in the results from the intervention group so a larger sample is appropriate, but there is still enough in the control group to playShow MoreRelatedEssay on Exercise 11 161073 Words   |  5 PagesName:SALYYOHANNAN________________________________________ Class HLT-362V______________________ Date:11/16/2014______________________________________________ EXERCISE-11 1) What demographic variables were measured at least at the interval level of measurement Education is measured at the interval scales because the data is measured on specific intervals, and grades of education. 2) What statistics were used to describe the length of labor in this study? Were these appropriate? Length