Question

A cognitive retraining clinic assists outpatient victims of head injury, anoxia, or other conditions that result in cognitive impairment. Each incoming patient is evaluated to establish an appropriate treatment program and estimated length of stay. To see if the evaluation teams are consistent, 12 randomly chosen patients are separately evaluated by two expe teams (A and B) as shown. Estimated Length of Stay in Weeks Team 1 2 Patient 9 10 1112 A 20 35342347 35 30 13 39 3935 13 B 42 4828 47 51 1722 26 43 48 38 17 (a) Choose the appropriate hypotheses. Assume Hd is the difference in mean lengths of team A and team B (b) Specify the decision rule at the 10 level of significance.(Round your answers to 3 decimal places. A negative values should be indicated by a minus sign.) Reject te nu hypothesis if the p-value is less than . B 0.10 or if tar (c) Find the test statistic tealc (Round your answer to 3 decimal places. A negative value should be indicated by a or Icalc minus sign.) teale (d) Find the p-value. (Round your answer to 3 decimal places. A negative value should be indicated by a minus sign.) p-value (e) Make a decision. We Do not rejectthe null hypothesis. t) State your conclusion. We can conclude that the evaluator teams are consistent in their estimates. 40 F2 F3 F4

Answer 1

Here we have data:

A	B	d=A-B
20	42	-22
35	48	-13
34	28	6
23	47	-24
47	51	-4
35	17	18
30	22	8
13	26	-13
39	43	-4
39	48	-9
35	38	-3
13	17	-4