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Mathematics, 23.11.2019 02:31 softball2895

If the reported national success rate for a particular operation is 80%, what number of unsuccessful operations would you expect to find in a review of 100 records in your hospital if your rate is the same as the national average?
b suppose you found records for 25 unsuccessful operations among the 100 surveyed. is there enough evidence to conclude that the success rate is different from the national experience?
c what would be your conclusion if you found 250 unsuccessful operations in a review of 1000 records?

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