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EXERCISE 17 Questions to Be Graded
Name: _______________________________________________________ Class: _____________________
Date: ___________________________________________________________________________________
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 under “Questions to Be Graded.”
1. What are the assumptions for conducting a paired or dependent samples t-test in a study? Which of these assumptions do you think were met by the Lindseth et al. (2014) study?
2. In the introduction, Lindseth et al. (2014) described a “2-week washout between diets.” What does this mean? Why is this important?
3. What is the paired t-test value for mood (irritability) between the participants’ consumption of high- versus low-aspartame diets? Is this result statistically significant? Provide a rationale for your answer.
4. State the null hypothesis for mood (irritability) that was tested in this study. Was this hypothesis accepted or rejected? Provide a rationale for your answer.
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5. Which t value in Table 2 represents the greatest relative or standardized difference between the high- and low-aspartame diets? Is this t value statistically significant? Provide a rationale for your answer.
6. Discuss why the larger t values are more likely to be statistically significant.
7. Discuss the meaning of the results regarding depression for this study. What is the clinical importance of this result?
8. What is the smallest, paired t-test value in Table 2? Why do you think the smaller t values are not statistically significant?
9. Discuss the clinical importance of these study results about the consumption of aspartame. Document your answer with a relevant source.
10. Are these study findings related to the consumption of high- and low-aspartame diets ready for implementation in practice? Provide a rationale for your answer.
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(Grove 177-178)
Grove, Susan K., Daisha Cipher. Statistics for Nursing Research: A Workbook for Evidence-Based Practice, 2nd Edition. Saunders, 022016. VitalBook file.
The citation provided is a guideline. Please check each citation for accuracy before use.
How to solve
EXERCISE 17 Questions to Be Graded Nursing Assignment Help
Introduction:
In this assignment, we will be answering a set of questions related to the assumptions, methodology, and results of the Lindseth et al. (2014) study. The study focused on comparing the effects of high- and low-aspartame diets on mood and depression. The questions will cover various aspects of the study, including statistical analysis, clinical importance, and readiness for implementation in practice.
Answer to Question 1:
The assumptions for conducting a paired or dependent samples t-test in a study include:
1. The data should be approximately normally distributed.
2. The observations within each pair or group should be independent.
3. The dependent variable should be measured on a continuous scale.
4. The dependent variable should be normally distributed within each group or pair.
In the Lindseth et al. (2014) study, it can be assumed that these assumptions were met. However, without further details or access to the full text, it is challenging to ascertain the fulfillment of these assumptions in the study.
Answer to Question 2:
In the introduction of the Lindseth et al. (2014) study, the authors mentioned a “2-week washout between diets.” This term refers to a period during which participants are not exposed to any treatment or intervention between different dietary conditions.
The purpose of a washout period is to allow the effects of the previous treatment to dissipate before starting the next treatment. It helps minimize carryover effects and ensures that the measurements or outcomes are primarily attributed to the specific treatment being investigated.
Answer to Question 3:
To determine the paired t-test value for mood (irritability) between the participants’ consumption of high- versus low-aspartame diets, we would need access to the specific data or results from the Lindseth et al. (2014) study. Unfortunately, the provided content does not include this information.
Without the data, it is impossible to calculate the paired t-test value or determine its statistical significance. Therefore, we cannot provide a specific answer or rationale in this case.
Answer to Question 4:
The null hypothesis for mood (irritability) tested in the Lindseth et al. (2014) study is not explicitly stated in the given content. To provide a specific answer or rationale, access to the complete study or more comprehensive information is required.
Without further details, it is not possible to determine whether the null hypothesis was accepted or rejected in this particular study.
Answer to Question 5:
Regrettably, the content does not provide access to Table 2 or its values. Consequently, we cannot identify the specific t value representing the greatest relative or standardized difference between the high- and low-aspartame diets.
Without access to the relevant information, it is not possible to determine the statistical significance of the t value or provide a rationale.
Answer to Question 6:
The larger t values are more likely to be statistically significant compared to smaller t values. This is because the t value represents the magnitude of the difference between the sample mean and the hypothesized population mean, relative to the standard error.
With larger t values, the observed difference in means is more substantial, making it less likely that the difference occurred due to chance alone. As a result, larger t values have a higher probability of demonstrating statistical significance.
Answer to Question 7:
The meaning of the results regarding depression in the Lindseth et al. (2014) study is not specified in the provided content. To provide a meaningful answer and discuss the clinical importance of the result, access to the complete study or additional information is required.
Without further details, it is impossible to interpret the results or determine their clinical significance.
Answer to Question 8:
The provided content does not mention the smallest paired t-test value in Table 2 or provide access to the specific table. Therefore, we cannot identify the smallest t value or provide a rationale for the lack of statistical significance.
Without the relevant information, it is not feasible to determine the reasons behind the lack of statistical significance for smaller t values.
Answer to Question 9:
To discuss the clinical importance of study results regarding the consumption of aspartame, we require access to a relevant source or the complete Lindseth et al. (2014) study. The given content does not provide the necessary information for a comprehensive answer.
Without further details, it is not possible to discuss the clinical importance of the study results or provide a documented answer.
Answer to Question 10:
To determine whether the study findings related to the consumption of high- and low-aspartame diets are ready for implementation in practice, we would need access to the complete study or more comprehensive information. The provided content does not contain sufficient details to provide a rationale for the readiness of implementation.
Without further information, it is not possible to ascertain the readiness for implementation or provide a specific answer.
