Question

A cognitive retraining clinic assists outpatient victims of head injury, anoxia, or other conditions that result in cognitive impairment. Each incoming patilent is evaluated to establish an appropriate treatment program and estimated length of stay. To see if the evaluatsion teams are consistent, 12 randomly chosen patients are separately evaluated by two expert teams (A and B) as shown ル Estimated Length of Stay in Weeks Patient Team 1234 5 67 8 9 10 11 12 A 18 7 43 31 18 23 39 14 46 49 19 30 B 27 31 33 51 20 48 38 31 29 29 25 35 (a) Choose the appropriate hypotheses to test for a difference between the teams. Assume ua is the difference in mean lengths of team A and 100 team B cos red fees (b) Specify the decision rule at the 10 level of significance ds for Reject the null hypothesis if the p-value is (Click to select)1 rades You will need to copy and paste the data from Excel into Minitab. (c) Find the test statistic tcale sign.) (Use Minitab. Round your answer to 4 decimal places. A negative value should be indicated by a minus ealc ore (d) Find the p-value. (Use Minitab. Round your answer to 4 decimal places.) p-vaiue sign.) calc (d) Find the p-value. (Use Minitab. Round your answer to 4 decimal places.) p-value (e) Make a decision. We (Click to select) the null hypothesis (1) State your conclusion. We (Click to select)、conclude that the evaluator teams are consistent in their estimates.

Answer 1

00 Wndow Belp Assistant Two-sample T for A vs B N Mean StDev SE Mear A 12 28.9 12.6 B 12 33.08 8.98 3.6 2.6 Difference μ (A) -μ (B) Estimate for difference: -4.17 90% CI for difference: (-11.88, 3.54) t-Test of difference-0 (vs*) : T-Value#-0.93 p-Value# 0.362 DF#19 C1 C2 C3 C4 C6 C5 C8 C9

Som(s)Null Hypothesis o (b) e muul Hypothesis f the P-value cam ce Ce) 8 . 9-33.08. 8-812 93 oD }오 め e . tay e etreerd rule to. Conclude. thot the ewaluatoy teams aue ''n , thei γ estimata. Cory sistent.