Both proponents of and skeptics about health-store pills and nutritional supplements agree that to make valid claims about them, more clinical research on alternative medicines is necessary. One study has looked at a supplement for fighting the pain of arthritis. Based on the table below, test the claim that for those with arthritis, glucosamine hydrochloride has no effect on whether the subject feels improvement. Use the 0.05 level of significance. Does this study show that glucosamine hydrochloride is effective in reducing the pain of arthritis? If the study had a larger sample size and similar ratios were found within the contingency table, could this affect the outcome of the statistical test?

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Glucosamine Hydrochloride Placebo 24 29 Felt improvement Did not feel improvement Based on data from the Toronto Star, September 19, 1998. 23