# Question

Use the level and power values for the paired t test and Wilcoxon signed-rank test given in Table 6.18 to answer the following questions.

a. For small sample sizes, n ≤ 20, does the actual level of the t test appear to deviate from the nominal level of α = .05?

b. Which type of deviations from a normal distribution, skewness or heavy-tailedness, appears to have the greater affect on the t test?

c. For small sample sizes, n ≤ 20, does the actual level of the Wilcoxon signed-rank test appear to deviate from the nominal level of α = .05?

d. Which type of deviations from a normal distribution, skewness or heavy-tailedness, appears to have the greater effect on the Wilcoxon signed-rank test?

a. For small sample sizes, n ≤ 20, does the actual level of the t test appear to deviate from the nominal level of α = .05?

b. Which type of deviations from a normal distribution, skewness or heavy-tailedness, appears to have the greater affect on the t test?

c. For small sample sizes, n ≤ 20, does the actual level of the Wilcoxon signed-rank test appear to deviate from the nominal level of α = .05?

d. Which type of deviations from a normal distribution, skewness or heavy-tailedness, appears to have the greater effect on the Wilcoxon signed-rank test?

## Answer to relevant Questions

Use the level and power values for the paired t test and Wilcoxon signed-rank test given in Table 6.18 to answer the following questions: a. Suppose a level .05 test is to be applied to a paired data set that has ...The researchers also need to obtain precise estimates of the mean difference in systolic blood pressures for people who use the anti-inflammatory drug versus those who do not. a. Suppose the sample sizes are the same for ...Refer to Exercise 6.46. Answer the following questions using the combined data for both depths. a. Use the Wilcoxon rank sum test to assess whether there is a difference in population abundances between the sites within and ...To assess whether degreed nurses received a more comprehensive training than registered nurses, a study was designed to compare the two groups. The state nursing licensing board randomly selected 50 nurses from each group ...Refer to the epilepsy study data in Table 3.19. Use the data for the number of seizures after 8 weeks for the placebo patients and for the patients treated with the drug progabide to answer the following questions. a. Do ...Post your question

0