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Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the results given below are among the results obtained in the study. Higher scores correspond to greater pain levels. Is this study an experiment or an observational study? Explain. Reduction in Pain Level After Magnet Treatment: n = 20, x = 0.486, s = 0.964 Reduction in Pain Level After Sham Treatment: n 20, x = 0.436, s = 1.44 ..... Choose the correct answer below. O A. The study is an observational study because there was no attempt to modify the individuals being studied. O B. The study is an experiment because the subjects are a systematic sample. O C. The study is an experiment because subjects were given treatments. D. The study is an observational study because the subjects are a simple random sample.

Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the results given below are among the results obtained in the study. Higher scores correspond to greater pain levels. Is this study an experiment or an observational study? Explain. Reduction in Pain Level After Magnet Treatment: n = 20, x = 0.486, s = 0.964 Reduction in Pain Level After Sham Treatment: n 20, x = 0.436, s = 1.44 ..... Choose the correct answer below. O A. The study is an observational study because there was no attempt to modify the individuals being studied. O B. The study is an experiment because the subjects are a systematic sample. O C. The study is an experiment because subjects were given treatments. D. The study is an observational study because the subjects are a simple random sample.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the results given below are among the results obtained in the study. Higher scores correspond to greater pain levels. Is this study an experiment or an observational study? Explain. Reduction in Pain Level After Magnet Treatment: n = 20, x = 0.486, s = 0.964 Reduction in Pain Level After Sham Treatment: n = 20, x = 0.436, s = 1.44 ..... Choose the correct answer below. A. The study is an observational study because there was no attempt to modify the individuals being studied. B. The study is an experiment because the subjects are a systematic sample. C. The study is an experiment because subjects were given treatments. D. The study is an observational study because the subjects are a simple random sample.
Transcribed Image Text:Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the results given below are among the results obtained in the study. Higher scores correspond to greater pain levels. Is this study an experiment or an observational study? Explain. Reduction in Pain Level After Magnet Treatment: n = 20, x = 0.486, s = 0.964 Reduction in Pain Level After Sham Treatment: n = 20, x = 0.436, s = 1.44 ..... Choose the correct answer below. A. The study is an observational study because there was no attempt to modify the individuals being studied. B. The study is an experiment because the subjects are a systematic sample. C. The study is an experiment because subjects were given treatments. D. The study is an observational study because the subjects are a simple random sample.
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