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Question: to determine if a malpractice lawsuit is more likely to...

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To determine if a malpractice lawsuit is more likely to follow certain types of surgeries, random samples of three different types of surgeries were studied, and the following data resulted.

Type of Operation Number Sampled Number Leading to a Lawsuit 400 Heart surgery 16 300 Brain surgery 19 300 Appendectomy

Test the hypothesis that the percentages of the surgical operations that lead to lawsuits are the same for each of the three types.

(a) Use the 5 percent level of significance.
(b) Use the 1 percent level of significance.

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