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.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 15PPS
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