Magnet Treatment of Pain People spend around $5 billion annually for the purchase of magnets used to treat a wide variety of pains.Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual ana-log scale, and the results given below are among the results obtained in the study (based on data from "Bipolar Permanent Magnets for the Treatment of Chronic Lower Back Pain: A Pi-lot Study," by Collacott, Zimmerman, White, and Rindone, Journal of the American Medical Association, Vol. 283, No. 10).

For this question do the following

a. Identify the null and alternative hypotheses

b. Calculate the test statistic

c. The p value =0.8959. Use a 0.05 significance level to make your decision about the null hypothesis

d. Does it appear that magnets are effective in treating back pain?