Instructions -
Your CEO notes that the recently published (HCUP) statistics show that the mean length of stay (LOS) for total knee replacement surgery (DRG 468) is 2.7 days for private insurance. The CEO is concerned because most patients who receive knee replacement are on Medicare only. The CIO retrieves data on 51 Medicare patients with the same DRG and determines the LOS in their hospital is 3.0 days with a standard deviation of 1. Can you reject the null hypothesis with a single sample t-test (two tailed)? Calculate your answer, as well as the confidence intervals tion is strictly prohibited. If you have received this communication in error, please immediately notify the sender by replying to the message and deleting all copies, including attachments, from your system.