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Find the Value of The χ2\chi ^ { 2 } Test Statistic for a Hypothesis Test of Independence

question 44

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Find the value of the χ2\chi ^ { 2 } test statistic for a hypothesis test of independence. Round your answer to 3 decimal places.
-Tests for adverse reactions to a new drug yielded the results given in the table.  Drug  Placebo  Headaches 117 No headaches 7391\begin{array}{l|cc} & \text { Drug } & \text { Placebo } \\\hline \text { Headaches } & 11 & 7 \\\text { No headaches } & 73 & 91\end{array}


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