Mathematics, 06.05.2020 18:10 evelin23

In a study designed to test the effectiveness of magnets for treating back pain, 20 patients were given a treatment with magnets. Pain was measured using the VAS scale. The average VAS reading of the sample was 5.0 with a standard deviation of 2.9. Construct a 95% confidence interval of the true mean.

Z D/2 = 2.09

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In a study designed to test the effectiveness of magnets for treating back pain, 20 patients were gi...

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