10.20 Biofeedback is a treatment technique in which people are trained to improve their health by using signals from their own bodies. Specialists in many different fields use biofeedback to help their patients cope with pain. A study was conducted to compare a biofeedback treatment for chronic pain with an NSAID medical treatment. A group of 2,000 newly diagnosed chronic pain patients were randomly assigned to receive to one of the two treatments. After 6 weeks of treatments, the pain levels of the patients were assessed with the following results Significant Reduction in Pain Treatment Biofeedback NSAID Total res 560 680 1,240 No 440 320 760 Total 1,000 1,000 2,000 a. For both treatments, place 95% confidence intervals on the proportions of patients who experienced a significant reduction in pain. b. Is there significant evidence (a - .05) of a difference in the two treatments relative to the proportions of patients who experienced a significant reduction in pain? C. Place a 95% confidence interval on the difference in the two proportions.

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10.20 Biofeedback is a treatment technique in which people are trained to improve their
health by using signals from their own bodies. Specialists in many different fields use biofeedback
to help their patients cope with pain. A study was conducted to compare a biofeedback treatment
for chronic pain with an NSAID medical treatment. A group of 2,000 newly diagnosed chronic
pain patients were randomly assigned to receive to one of the two treatments. After 6 weeks of
treatments, the pain levels of the patients were assessed with the following results
Significant Reduction in Pain
Treatment
Biofeedback
NSAID
Total
res
560
680
1,240
No
440
320
760
Total
1,000
1,000
2,000
a. For both treatments, place 95% confidence intervals on the proportions of patients
who experienced a significant reduction in pain.
b. Is there significant evidence (a - .05) of a difference in the two treatments relative
to the proportions of patients who experienced a significant reduction in pain?
C. Place a 95% confidence interval on the difference in the two proportions.
Transcribed Image Text:10.20 Biofeedback is a treatment technique in which people are trained to improve their health by using signals from their own bodies. Specialists in many different fields use biofeedback to help their patients cope with pain. A study was conducted to compare a biofeedback treatment for chronic pain with an NSAID medical treatment. A group of 2,000 newly diagnosed chronic pain patients were randomly assigned to receive to one of the two treatments. After 6 weeks of treatments, the pain levels of the patients were assessed with the following results Significant Reduction in Pain Treatment Biofeedback NSAID Total res 560 680 1,240 No 440 320 760 Total 1,000 1,000 2,000 a. For both treatments, place 95% confidence intervals on the proportions of patients who experienced a significant reduction in pain. b. Is there significant evidence (a - .05) of a difference in the two treatments relative to the proportions of patients who experienced a significant reduction in pain? C. Place a 95% confidence interval on the difference in the two proportions.
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