Q:

In a coal mine the expected deaths of coal worker were 7 while the deaths that really occurred were 9. The standardized mortality ratio for coal workers is:

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In a coal mine the expected deaths of coal worker were 7 while the deaths that really occurred were 9. The standardized mortality ratio for coal workers is:


  1. 100
  2. 109
  3. 11
  4. 5+
  5. 129
  6. 130

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d) 5+

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