Question: Klein et al. (2011) conducted a study to determine the long-term effect of vitamin E and selenium on risk of prostate cancer in relatively healthy

Klein et al. (2011) conducted a study to determine the long-term effect of vitamin E and selenium on risk of prostate cancer in relatively healthy men. The observed frequencies are provided below. Using a 0.05 significance level, you need to test the claim that there is a significant association between supplement and prostate cancer.

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