Question: Use the z-test function to test the hypothesis for each of the three MS-DRGs: 291, 292, 293. H o : OUR ALOS FOR DRG =

Use the z-test function to test the hypothesis for each of the three MS-DRGs: 291, 292, 293.

  • Ho: OUR ALOS FOR DRG = BENCHMARK ALOS FOR DRG
  • H1: OUR ALOS FOR DRG > BENCHMARK ALOS FOR DRG

291 - number of discharges 235834, mean LOS 5.6586

292 - number of discharges 183281, mean LOS 4.2131

293- number of discharges 52684, mean LOS 2.9563

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