A pharmacist wishes to test the effect of a certain drug on pupil dilation. They recruit 16 participants for this study and randomly assign 8 of them to receive the drug while 8 others receive a placebo. Refer to the "pharmacy pupil" sheet in the lecture section of the blackboard and answer the following: 1. What is the appropriate statistical test? 2. Using an alpha of 0.01, what is the critical value? 3. Report the value of the obtained statistic for the researcher's study. 4. What is your decision about the null? 5. Compute the effect size. Be sure to show your work and interpret the effect. Pupil diameter (in mm) Group 7.9 Drug 7.6 Drug 7.1 Drug 7.4 Drug 7.8 Drug 7.1 Drug 4.9 Drug 7.3 Drug 9 Placebo 8.9 Placebo 9.2 Placebo 9.1 Placebo 8.3 Placebo 9.3 Placebo 9.3 Placebo 8.5 Placebo
Added by Michael H.
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Given that the study involves comparing the means of two independent groups (drug vs. placebo), the appropriate statistical test is the Independent Samples t-test. This test is used to determine if there is a significant difference between the means of two Show moreā¦
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