Statistics

Preliminary data analyses indicate that you can consider the assumptions for using nonpooled t-procedures satisfied. Researchers obtained the data shown in the table on the number of acute postoperative days in the hospital using the dynamic and static systems. At the 10% significance level, do the data provide sufficient evidence to conclude that the mean number of acute postoperative days in the hospital is smaller with the dynamic system than with the static system? (Note: X1 = 8.17, $1 = 1.47, X2 = 10.33, and $2 = 3.72) Click on the icon to view the data table. What are the hypotheses for the nonpooled t-test? O A. Ho: H1 = H2 OB. Ho: H1 = H2 Ha: H1

H2 Ha: H1 > H2 Find the test statistic. t=(Round to three decimal places as needed.) Find the critical value(s). = 15 (Round to three decimal places as needed. Use a comma to separate answers as needed.) What is the conclusion of the hypothesis test? the null hypothesis, meaning that the data sufficient evidence to conclude that the mean number of acute postoperative days in the hospital is smaller with the dynamic system than with the static system