EXERCISE 36 Questions To Be Graded
EXERCISE 36 Questions to be Graded
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.
Answer: The F value suggests there is a significant difference between the results of the control and treatment groups. The P-value of 0.005 is < the alpha of 0.05.This suggest that the groups are significantly different and the null hypothesis should be rejected.
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 hypothesis be rejected for the difference between the two groups in change in mobility scores over 12 weeks? Provide a rationale for your answer.
Answer: Treatment group mean=control group mean
With the p-value being < the alpha, the null hypothesis would be rejected indicating the difference in the mean mobility scores.
3. 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?
Answer: the p-value of 0.005 suggests that the results are statistically significant.
4. If the researchers had set the level of significance or α = 0.01, would the results of p = 0.001 still be statistically significant? Provide a rationale for your answer
Answer: Yes 0.001 is the α of 0.01; the null hypothesis would be accepted
5. If F (3, 60) = 4.13, p = 0.04, and α = 0.01, is the result statistically
Significant? Provide a rationale for your answer. Would the null hypothesis be accepted or rejected?
In this case the result would not be considered statistically significant because 0.04 > 0.01. In this case, the null hypothesis would be accepted and it would be concluded that there is no difference between the control and
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.
Answer: The F value suggests there is a significant difference between the results of the control and treatment groups. The P-value of 0.005 is < the alpha of 0.05.This suggest that the groups are significantly different and the null hypothesis should be rejected.
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 hypothesis be rejected for the difference between the two groups in change in mobility scores over 12 weeks? Provide a rationale for your answer.
Answer: Treatment group mean=control group mean
With the p-value being < the alpha, the null hypothesis would be rejected indicating the difference in the mean mobility scores.
3. 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?
Answer: the p-value of 0.005 suggests that the results are statistically significant.
4. If the researchers had set the level of significance or α = 0.01, would the results of p = 0.001 still be statistically significant? Provide a rationale for your answer
Answer: Yes 0.001 is the α of 0.01; the null hypothesis would be accepted
5. If F (3, 60) = 4.13, p = 0.04, and α = 0.01, is the result statistically
Significant? Provide a rationale for your answer. Would the null hypothesis be accepted or rejected?
In this case the result would not be considered statistically significant because 0.04 > 0.01. In this case, the null hypothesis would be accepted and it would be concluded that there is no difference between the control and