A pharmaceutical company claims that their new drug is effective in treating a certain disease. They conducted a clinical trial with 200 patients, 100 receiving the drug and 100 receiving a placebo. The recovery rate for the drug group was 80%, while the recovery rate for the placebo group was 60%. Using appropriate statistical methods, determine whether the drug has a significant effect on recovery rates at a significance level of 0.05. Interpret your results in the context of the study and potential limitations.

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Fifty-four wild bears were anesthetized, and then their weights and chest sizes were measured and listed in a data set. Correlation Results Results are shown in the accompanying display. Is there sufficient evidence to support the claim that there is a linear correlation between the weights of bears and their chest sizes? When measuring an anesthetized bear, is it easier to measure chest size than weight? If so, does it appear that a measured chest size can be used to predict the weight? Use a significance level of a =0.05. Correlation coeff, r: 0.966175 Critical r: ±0.2680855 P-value (two tailed): 0.000 Determine the null and alternative hypotheses. H1: p (Type integers or decimals. Do not round.) Identify the correlation coefficient, r. (Round to three decimal places as needed.) Identify the critical value(s). (Round to three decimal places as needed.) A. There is one critical value at r= O B. There are two critical values at r= + Is there sufficient evidence to support the claim…