7. Researchers are studying the pain-killing effects of a new drug excedrol. They administered the drug to a test sample and a placebo to a control sample. People reported the improvement in their symptoms on a scale of 1 to 5. The results are st.dev. n mean Excedrol Placebo 50 3.35 50 2.12 1.24 1.80 At the level of 1%, test the hypothesis that excedrol performs better than placebo.

7. Researchers are studying the pain-killing effects of a new drug excedrol. They administered the drug to a test sample and a placebo to a control sample. People reported the improvement in their symptoms on a scale of 1 to 5. The results are st.dev. n mean Excedrol Placebo 50 3.35 50 2.12 1.24 1.80 At the level of 1%, test the hypothesis that excedrol performs better than placebo.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 4GP

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