5. An experimenter was interested in investigating the effects of two stimulant drugs (labeled A and...

5. An experimenter was interested in investigating the effects of two stimulant drugs (labeled A and B). She divided 20 rats equally into 5 groups (placebo, drug A low dose, drug A high dose, drug B low dose, drug B high dose). Each rat’s activity level (higher score is more active) was recorded 20 minutes after injection of the drug. The following table summarizes the results Treatment Sample size Mean STD Placebo 4 14.00 2.828 Low A 4 15.25 3.500 High A 4 18.25 3.500 Low B 4 16.75 2.550 High B 4 22.5 3.317 a. Construct the ANOVA table. Provide the approximate p-value using the F-table. Make sure to show your work. b. Test the hypotheses of interest using α=0.05. c. Use Tukey’s method for paired comparisons to rank the 5 treatments.

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orchestra answered 1 year ago

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