A neuropsychologist is conducting an experiment to determine the effects of different dosages of bromocriptine, a...
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A neuropsychologist is conducting an experiment to determine the effects of different dosages of bromocriptine, a dopamine agonist, on memory functioning. Sixty-four individuals are randomly assigned to one of four conditions: placebo (0 mg), 20 mg dosage, 40 mg dosage, or 60 mg dosage. After taking their pill for one month, each participant is brought into the lab and given a free recall task. Below are the means of items correctly recalled for each condition: Drug Dosage o mg 20 mg 40 mg 60 mg The results of a one-way ANOVA are summarized in the table below: Memory Score Between Groups Within Groups Total Sum of Squares 2368.000 2284.000 4652.000 Mean Number of Words Recalled 20 30 32 18 ANOVA df 3 60 63 F 789.333 20.736 38.067 Mean Square Sig. .000 1. Perform a Tukey's HSD analysis of all pairwise comparisons of means. Show your work. Show the four steps. You do not need to calculate effect size (6 points). 2. Perform all pairwise independent samples t-tests using Bonferroni's correction. Show your work. Show the four steps. You do not need to calculate effect size. Hint: The MSwithin is the pooled variance. (6 points) A neuropsychologist is conducting an experiment to determine the effects of different dosages of bromocriptine, a dopamine agonist, on memory functioning. Sixty-four individuals are randomly assigned to one of four conditions: placebo (0 mg), 20 mg dosage, 40 mg dosage, or 60 mg dosage. After taking their pill for one month, each participant is brought into the lab and given a free recall task. Below are the means of items correctly recalled for each condition: Drug Dosage o mg 20 mg 40 mg 60 mg The results of a one-way ANOVA are summarized in the table below: Memory Score Between Groups Within Groups Total Sum of Squares 2368.000 2284.000 4652.000 Mean Number of Words Recalled 20 30 32 18 ANOVA df 3 60 63 F 789.333 20.736 38.067 Mean Square Sig. .000 1. Perform a Tukey's HSD analysis of all pairwise comparisons of means. Show your work. Show the four steps. You do not need to calculate effect size (6 points). 2. Perform all pairwise independent samples t-tests using Bonferroni's correction. Show your work. Show the four steps. You do not need to calculate effect size. Hint: The MSwithin is the pooled variance. (6 points)
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1 Tukeys HSD Analysis of All Pairwise Comparisons of Means Step 1 Calculate the critical value Q Q M... View the full answer
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