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Posted: April 9th, 2022
Statistics for Nursing Research: A Workbook 4
‘Follow your instructor’s directions to submit your answers to the following questions for grading. Your instructor may ask you to write your answers below and submit them as a hard copy for grading. Alternatively, your instructor may ask you to use the space below for notes and submit your answers online at http://evolve.elsevier.com/Grove/Statistics/ under “Questions to Be Graded.”
1. What do degrees of freedom ( df ) mean? Canbulat et al. (2015) did not provide the dfs in their study. Why is it important to know the df for a t ratio? Using the df formula, calculate the df for this study.
2. What are the means and standard deviations (SD s) for age for the Buzzy intervention and control groups? What statistical analysis is conducted to determine the difference in means for age for the two groups? Was this an appropriate analysis technique? Provide a rationale for your answer.
3. What are the t value and p value for age? What do these results mean? 4. What are the assumptions for conducting the independent samples t -test ?
5. Are the groups in this study independent or dependent? Provide a rationale for your answer.
6. What is the null hypothesis for procedural self-reported pain measured with the Wong Baker Faces Scale (WBFS) for the two groups? Was this null hypothesis accepted or rejected in this study? Provide a rationale for your answer.
7. Should a Bonferroni procedure be conducted in this study? Provide a rationale for your answer.
8. What variable has a result of t = − 6.135, p = 0.000? What does the result mean?
9. In your opinion, is it an expected or unexpected finding that both t values on Table 2 were found to be statistically significant. Provide a rationale for your answer.
10. Describe one potential clinical benefit for pediatric patients to receive the Buzzy intervention that combined cold and vibration during IV insertion
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A Workbook on Statistics for Nursing Research 4
A Workbook on Statistics for Nursing Research 4
A Workbook on Statistics for Nursing Research 4
‘Follow your instructor’s instructions to submit your responses to the questions below for grading. Your instructor may request that you write your responses below and submit them as a physical copy for grading. Alternatively, your instructor may tell you to take notes in the space below and submit your answers online at http://evolve.elsevier.com/Grove/Statistics/ under “Questions to Be Graded.”
1. What is the definition of degrees of freedom (df)? In their study, Canbulat et al. (2015) did not include the dfs. Why is knowing the df for a t ratio important? Calculate the df for this study using the df formula.
2. What are the
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