Patients in a hospital are classified as surgical or medical. A record is kept of the number of times patients require nursing service during the night and whether or not these patients are on Medicare. The data are presented here: Test the hypothesis (using a = 0.01) that calls by surgical medical patients are independent of whether the patients are receiving Medicare. Find the P-value for this test.

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Patient Category Surgical Medical Medicare Yes 46 52 No 36 43