20 Statistics homework questions
Greatdanelover
Ch17questions.pdf
Exercise 17: Understanding Paired or Dependent Samples t-Test
Questions to Be Graded
Name:
Class:
Date: 20-07-2020
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?
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2: In the introduction, Lindseth et al. (2014) described a “2-week washout between diets.” What does this mean? Why is this important?
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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.
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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.
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6: Discuss why the larger t values are more likely to be statistically significant.
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7: Discuss the meaning of the results regarding depression for this study. What is the clinical importance of this result?
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8: What is the smallest, paired t-test value in Table 2? Why do you think the smaller t values are not statistically significant?
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9: Discuss the clinical importance of these study results about the consumption of aspartame. Document your answer with a relevant source.
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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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- s_name: Amanda
- sclass: Statistics
