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 expert teams (A and B) as shown. Estimated Length of Stay in Weeks Patient Team 9 10 11 12 33 20 13 49 15 16 50 43 52 29 22 21 49 29 4 A 38 27 51 46 2320 47 40 (a) Choose the appropriate hypotheses. Assume μd 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 the null hypothesis if the p-value is less than 0.10 or if fak (c) Find the test statistic tealc- (Round your answer to 3 decimal places. A negative value should be indicated by a minus sign.) (calc (d) Find the p-value. (Round your answer to 3 decimal places. A negative value should be indicated by a minus sign.) or tcalc (e) Make a decision. We Do not reject the null hypothesis. (f) State your conclusion. We can conclude that the evaluator teams are consistent in their estimates.

Answer 1

a)
option A)
b)
p-value is less than 0.10
or t _Calc < -1.796 and t > 1.796
c)t_Calc = -0.117

d)
p-value = 0.9087
e)
we do not reject the null hypothesis
f)
we can conclude