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4. Compute Worley's customer margin for University and Memorial. (Hint: Do not overlook the $30,000 cost of goods sold that Worley incurred serving each hospital.) Note: Loss amounts should be indicated with a minus sign. 4. Compute Worley's customer margin for University and Memorial. (Hint: Do not overlook the $30,000 cost of goods sold that Worley incurred serving each hospital.) Note: Loss amounts should be indicated with a minus sign