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7.19. Which of the following is true about the various multiple comparison tests? a. They are appropriate only for one-way ANOVAs. *b. They can yield confidence intervals of different widths around mean differences. c. They will all yield the same conclusions about differences between group means. d. They are used primarily to minimize the risk of a Type II error. 7.20. Which of the following is not true? a. The effect size index in ANOVA is n2. b. The effect size index in ANOVA indicates the proportion of variance in the dependent variable accounted for by the independent variable. *c. An effect size of .15 in an ANOVA context would be considered small. d. The effect size index in ANOVA is different than that used for a t-test. Questions 7.21 through 7.24 pertain to the following table (Table 7), which presents fictitious results regarding the effects of guided imagery on pain outcomes among patients with cancer. Table 7 Physiologic Outcomes for Patients with Emphysema during Exercise Performance Under Three Different Conditions (IV = 50) Physiologic Outcome Control With Admin- With Condition istration of Compressed Oxygen Air Mean + SD Mean + SD Mean + SD Dyspnea rating (1-10) 4.70+ 2.3 4.77 + 2.6 5.09+ 2.6 1.99 008 Heart rate (bpm) 121.1 + 13.6 126.9 + 19.9 126.0 + 21.1 12.54 <.001 oxygen saturation spo breaths per minute .22 refer to table which statistical test is most likely being reported in this a. one-way anova b. two-way rm-anova d. it cannot be determined. for outcome would the researcher need accept null hypothesis dyspnea rating heart rate c. what were degrees of freedom between treatment those analyovo>