□ EXERCISE 31 Questions to be Graded
1.What are the two groups whose results are reflected by the t ratios in Tables 2 and 3?
Table 2 reflects the Health Promotion Program’s effects on cardiovascular risk factors and Table
3 is reflective of the program’s effects on health behavior.

2.Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest and 3 months outcomes? Is this t ratio statistically significant? Provide a rationale for your answer. 3.Which t ratio listed in Table 3 represents the smallest relative difference between the pretest and 3 months? Is this t ratio statistically significant? What does this result mean?

The T-ratio is 0.80. This value is not statistically significant since it is less than the tabulated value of 1.96. This is indicative of the program having no effect on health behaviors. 4.What are the assumptions for conducting a t-test for dependent groups in a study? Which of these assumptions do you think were met by this study?

Several assumptions for t-test for dependent/matched groups in a study are applied. First, it is assumed that the difference between the two groups of the dependent t-test is approximately or normally distributed. Second, the dependent variable is interval or ratio (continuous in nature). Third, any independent variable consists of one group or two “matched pair” groups. Finally, all subjects are assumed to have been surveyed the same and data collection was unbiased. The assumption that was met in this study is the normal distribution. 5.Compare the 3 months and 6 months t ratios for the variable Exercise from Table 3. What is your conclusion about the long-term effect of the health-promotion intervention on Exercise in this study? After comparing the t-ratios for the Exercise variable, I conclude that there is an effect on long term exercise and health behaviors. 6.What is the...

...independent” are the assumptions for the t-test for dependent groups in a study (Grove, Susan K. p. 231). The dependent variable(s) is (are) measured at interval or ratio levels and the groups examined for differences are dependent based on matching or subjects serving as their own control are the 2 assumptions met by this study.
5. Compare the 3 months and 6 months t ratios for the variable Exercise from Table 3. What is your
conclusion about the long-term effect of the health-promotion intervention on Exercise in this study?
Answer: t=-7.75* (3months) and t= -3.93* (6 months). At 3 months, the difference in exercise from pretest was statistically significant with t = - 7.75*, P< 0.05. At 6 months the difference in exercise from pretest was also statistically significant with t = -3.93*. The result indicates that exercise variables increased significantly from pretest (mean 1.88) to 3 months (mean 2.58), and decreased at 6 months (mean 2.29) as compared to 3 months. Thus, the health promotion intervention did not have a positive long term effect on the subject’ exercise pattern.
236 EXERCISE31 • t-test for Dependent Groups
6. What is the smallest, significant t ratio listed in Table 2? Provide a rationale for your answer.
Answer: p= 2.03*, P< 0.05 is the smallest significant t ratio listed in table 2. 2.03 is the smallest t ratios with an asterisk,...

...in a study are the data for both group should be normally distributed and the groups are correlated with each other. The groups are correlated because the same measurement is taken over from the same subject at pre-test, 3 months and at 6 months. There are 25 subjects in this study and out of 25, 21 have completed the study, it means that the data is enough to conduct the paired sample t test. Also the data should be continuous and this assumption was met because the data is obtained on a interval or ratio scale.
5. Compare the 3 months and 6 months t ratios for the variable Exercise from Table 3. What is your conclusion about the long-term effect of the health-promotion intervention on Exercise in this study? We can see that the magnitude of the score value is larger at 3 months and levels off at 6 months, thus we conclude that over time the long-term health-promotion intervention on Exercise in this study has less of an effect than in the short-term.
6. What is the smallest, significant t ratio listed in Table 2? Provide a rationale for your answer. The smallest significant t ratio is 2.03 for variable Cholesterol at 3 months. This ratio is significant at 5% level and this is smallest among all other significant t ratios.
7. Why are the larger t ratios more likely to be statistically significant? The larger t ratios are more likely to be statistically significant because it takes a larger difference between...

...Name: Zipporah Gachoya Class: HLT362V
Date: 08/10/2013
■ Ex Questions to be graded: Exercise31
6. What is the smallest, significant t ratio listed in Table 2? Provide a rationale for your answer.
t = 2.03* the smallest t ratio listed in Table 2. It indicates that the cholesterol level change was statistically significant from pretest to 3 months. It is greater than the given value of p<0.05
7. Why are the larger t ratios more likely to be statistically significant?
They are more likely to be significant because there is a large difference in the pre and post tested values, so these are the areas that will be affected most. Their p-values are also smaller.
8. Did the health-promotion program have a statistically significant effect on Systolic blood pressure (BP) in this study? Provide a rationale for your answer.
No, the health-promotion program did not appear to have a significant effect on blood pressure. The t-ratio is greater than 0.05 which was the initial setting. This may be because the health program didn’t cover blood pressure, or it was simply something that people didn’t think about with their overall health.
9. Examine the means and standard deviations for Systolic BP at pretest, 3 months (completion of the treatment), and 6 months. What do these results indicate? Are these results clinically important? Provide a rationale for your answer.
These results indicate that...

...Threesamma Joseph
HLT-362V
9/7/2012
1. The answer is C, interval/ratio. The researchers analyzed the data as though it were interval/ratio level. They calculated the mean and standard deviation which is only appropriate for interval/ratio level data.
2. The mean post-test empowerment score for the control group is 97.12. This data is found explicitly in the chart of data given.
3. The baseline score mean is 14 and the post-test depression score mean is 13.36, meaning they were less depressed after completing the empowerment program. This is an expected finding because the researchers had hypothesized this decrease as a result of the program.
4. The mean baseline and post-test depression scores of the control group are both identical at 10.40. Because this is the control group, no change in depression score is expected, therefore this strengthens the validity of the research results when comparing the control group results to the experimental group results.
5. The group with the least amount of variability is the experimental empowerment post-test group, which has the lowest standard deviation of 7.28. The lower the standard deviation, the lower the variability because they are directly related.
6. Because the self-care self-efficacy experimental group’s baselines score has the highest standard deviation of 14.88 when compared to the empowerment variable, it has the greater dispersion.
7. The mean (X) is a measure of...

...
HLT 362 Module 5 Exercise 27 Simple Linear Regression
IF You Want To Purchase A+ Work Then Click The Link Below , Instant Download
http://hwnerd.com/HLT-362-Week-1-5-All-Discussion-Questions-53950000.htm?categoryId=-1
If You Face Any Problem E- Mail Us At Contact.Hwnerd@Gmail.Com
What are the independent and dependent variables in Figures 2, A, B, and C? How would you describe the relationship between the variables in Figures 2, A, B, and C?
What are the independent and dependent variables in Figures 3, A, B, and C? How would you describe the relationship between the variables in Figures 3, A, B, and C?
Was there a significant difference in the y intercept for the lines of best fi t in Figure 2 from the y intercept for the lines of best fi t in Figure 3? Provide a rationale for your answer.
Ŷ represents the predicted value of y calculated using the equation Ŷ a bx. In Figure 2, the formula for SBP is Ŷ 43.2 0.17x. Identify the y intercept and the slope in this formula. What does x represent in this formula?
In the legend beneath Figure 2, the authors give an equation indicating that systolic blood pressure is SBP 43.2 0.17x. If the value of x is postnatal age of 30 hours, what is the value for Ŷ or SBP for neonates ≤1,000 grams? Show your calculations. In the legend beneath Figure 2, the authors give an equation indicating that systolic blood pressure is SBP 50.3 0.12x. If the value of x is postnatal age of 30...

...
HLT 362 Module 4 Exercise 36
IF You Want To Purchase A+ Work Then Click The Link Below , Instant Download
http://hwnerd.com/HLT-362-Module-4-Exercise-36-539555.htm?categoryId=-1
If You Face Any Problem E- Mail Us At Contact.Hwnerd@Gmail.Com
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.
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 hypothesis be rejected for the difference between the two groups in change in mobility scores over 12 weeks? Provide a rationale for your answer.
The researchers stated that the participants in the intervention group reported a reduction in mobility difficulty at week 12. Was this result statistically significant, and if so at what probability?
If the researchers had set the level of significance or = 0.01, would the results of p 0.001 still be statistically significant? Provide a rationale for your answer.
If F(3, 60) 4.13, p 0.04, and = 0.01, is the result statistically significant? Provide a rationale for your answer. Would the null hypothesis be accepted or rejected?
Can ANOVA be used to test proposed relationships or predicted correlations between...

...EXERCISE 29 Questions to be Graded
1. Were the groups in this study independent or dependent? Provide a rationale for your answer.
The two groups were independent since they were formed based on gender with no intent to match subjects on any variable. The men and women selected didn’t share any relationship or live in the same location.
2. 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.
In this study, t= -3.15 describes the mental health variable. It is significant because they are the variables being tested since the p value is 0.002 and the alpha is 0.05, the difference can cause the null hypothesis to be rejected.
3. Is t = −1.99 significant? Provide a rationale for your answer. Discuss the meaning of this result in this study.
It is significant because the p= 0.049 value is smaller than the alpha that was set for this study (0.05). This means that there is a significant difference in the results obtained from men and women and this supports the experiment that was performed.
4. Examine the t ratios in Table VI. Which t ratio indicates the largest difference between the males and females post MI in this study? Is this t ratio significant? Provide a rationale for your answer.
The t ratio for mental health is t= -3.15, which indicates the largest difference between men and women post MI in this study. It is significant because it causes...

...1. The researchers analyzed the data they collected as though it were at what level of measurement?
The answer is C, which is interval/ratio scale.
2. What was the mean posttest empowerment score for the control group?
The mean posttest empowerment score for the control group was 97.12
3. Compare the mean baseline and posttest depression scores of the experimental group. Was this an expected finding? Provide a rationale for your answer.
The data shows that there was an improvement in the mean baseline and posttest depression scores of the experimental group. The baseline mean depression score was 14.00, while the post-test was down to 13.36. This study showed that after six weeks from initiating the program, there was an improvement in the participant’s depression, which was the expected finding.
4. Compare the mean baseline and posttest depression scores of control group. Do these scores strengthen or weaken the validity of the research results? Provide a rationale for your answer.
The mean baseline and post-test depression scores of the control group were both 14.40, which means that there was no change in the control group’s depressions. This study strengthen the validity of the research results, because this study proved that the empowerment program did help improve the experimental group’s depression, as opposed to the control group’s depression that remained the same after six weeks of study.
5. Which groups’ test scores had the least amount of...