Understanding Paired or Dependent Samples t-Test
Understanding Paired or Dependent Samples t-Test
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?
In the introduction, Lindseth et al. (2014) described a “2-week washout between diets.” What does this mean? Why is this important?
ORDER CUSTOM, PLAGIARISM-FREE PAPER
What is the paired t-test value for mood (irritability) between the participants’ consump¬tion of high- versus low-aspartame diets? Is the result statistically significant? Provide a rationale for your answer.
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.
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.
Discuss why the larger t values are more likely to be statistically significant.
Discuss the meaning of the results regarding depression for this study. What is the clinical importance of this result?
What is the smallest, paired t-test value in Table 2? Why do you think the smaller t values are not statistically significant?
Discuss the statistical and clinical importance of these study results about the consump¬tion of aspartame. Document your answer with a relevant source.
You must proofread your paper. But do not strictly rely on your computer’s spell-checker and grammar-checker; failure to do so indicates a lack of effort on your part and you can expect your grade to suffer accordingly. Papers with numerous misspelled words and grammatical mistakes will be penalized. Read over your paper – in silence and then aloud – before handing it in and make corrections as necessary. Often it is advantageous to have a friend proofread your paper for obvious errors. Handwritten corrections are preferable to uncorrected mistakes.
Use a standard 10 to 12 point (10 to 12 characters per inch) typeface. Smaller or compressed type and papers with small margins or single-spacing are hard to read. It is better to let your essay run over the recommended number of pages than to try to compress it into fewer pages.
Likewise, large type, large margins, large indentations, triple-spacing, increased leading (space between lines), increased kerning (space between letters), and any other such attempts at “padding” to increase the length of a paper are unacceptable, wasteful of trees, and will not fool your professor.
The paper must be neatly formatted, double-spaced with a one-inch margin on the top, bottom, and sides of each page. When submitting hard copy, be sure to use white paper and print out using dark ink. If it is hard to read your essay, it will also be hard to follow your argument.