A university researcher knowledgeable in Chinese medicine conducted a study to determine whether acupuncture can help reduce cocaine addiction. In this experiment, 18 cocaine addicts were randomly assigned to one of three groups of 6 addicts per group. One group received 10 weeks of acupuncture treatment in which the acupuncture needles were inserted into points on the outer ear where stimulation is believed to be effective. Another group, a placebo group, had acupuncture needles inserted into points on the ear believed not to be effective. The third group received no acupuncture treatment; instead, addicts in this group received relaxation therapy. All groups also received counseling over the 10-week treatment period. The dependent variable was craving for cocaine as measured by the number of cocaine urges experienced by each addict in the last week of treatment. The following are the results. Acupuncture + Counseling Placebo + Counseling Relaxation Therapy + Counseling 4 8 12 8 12 7 6 11 9 5 8 6 2 10 11 3 7 6 Do the craving for cocaine differs across the three-treatment conducted? Use Tukey test to determine if there is/are differences. Use the alpha given by the output, what do you conclude? Determine the: A. r-value and p-value B. Statistical Tool / Tests to be used. C. Sample size / Alpha Leve

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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A university researcher knowledgeable in Chinese medicine conducted a study to determine whether acupuncture can help reduce cocaine addiction. In this experiment, 18 cocaine addicts were randomly assigned to one of three groups of 6 addicts per group. One group received 10 weeks of acupuncture treatment in which the acupuncture needles were inserted into points on the outer ear where stimulation is believed to be effective. Another group, a placebo group, had acupuncture needles inserted into points on the ear believed not to be effective. The third group received no acupuncture treatment; instead, addicts in this group received relaxation therapy. All groups also received counseling over the 10-week treatment period. The dependent variable was craving for cocaine as measured by the number of cocaine urges experienced by each addict in the last week of treatment. The following are the results.

Acupuncture + Counseling	Placebo + Counseling	Relaxation Therapy + Counseling
4	8	12
8	12	7
6	11	9
5	8	6
2	10	11
3	7	6

Do the craving for cocaine differs across the three-treatment conducted? Use Tukey test to determine if there is/are differences.
Use the alpha given by the output, what do you conclude?

Determine the:
A. r-value and p-value
B. Statistical Tool / Tests to be used.
C. Sample size / Alpha Level

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