Tests for Adverse Reactions to a New Drug Yielded the Results

question 35

Essay

Tests for adverse reactions to a new drug yielded the results given in the table.Is the treatment (drug or placebo)independent of the reaction (whether or not headaches were experienced)? Use a 5% level of significance. $$\begin{array} { r | c c } & \text { Drug } & \text { Placebo } \\\hline \text { Headaches } & 11 & 7 \\\text { No headaches } & 73 & 91\end{array}$$

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