Question

Question 3. Cortisol, a key stress hormone is known to affect health. A large body of literature suggests that elevated cortisol levels are bad for people's health. However, emerging literature suggests that a certain amount of stress is good for people. Dr. Dim designs a study to test the effects of cortisol on general wellbeing, measured on scale of 10 to 60, with higher scores indicating overall greater health. Dr. Dim recruits 24 people and splits them in to 3 groups. Group 1 receives a 5 mg cortisol injection, group 2 receives a 10 mg cortisol injection, and group 3 receives a 15 mg cortisol injection. Each group is injected with cortisol every day for 3 weeks, after which their general health is measured. He predicts there will be some difference in overall health of these 3 groups but he's not sure what exactly he's going to find. Assuming alpha-.01, conduct the appropriate hypothesis test to determine if Dr. Dim's hypothesis is correct. 576 40 1444 37 1156 21 324 29 24 1444 96 38 1600 1 54 2916 38 31 40 32 1024 56 3136 1369 1156 1444 37 84 34 20 29 841 37 1369 351225 484 32 1024 43 1849 22 4,-256 ΣΧ,-8370 ΣΧ, "352 ΣΧ. 15874 ΣΧ,-216 ΣΥ-6240 n, м,-31 Σ all X = 824 n,3-8 M, 44 M,-27 Eall X 30484 N- 24 k-3

Answer 1

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