A cognitive retraining clinic assists outpatient victims of head injury, anoxia,

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.

  

  

  

  

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.)

  

  

Find the test statistic tcalc. (Round your answer to 3 decimal places. A negative value should be indicated by a minus sign.)

  

  

Find the p-value. (Round your answer to 3 decimal places. A negative value should be indicated by a minus sign.)

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.

Explanation / Answer

for above

a) H0: d = 0 vs. H1: d 0

b)Reject the null hypothesis if the p-value is less then 0.1 or if t calc >1.796 ot tcalc <-1.796

c)test statistic tcalc =0.704

d)p-value=0.4958

e)Do not reject  null hypothesis.

f)we can not conclude .........

A B difference(d) 40 32 8 44 34 10 15 45 -30 33 39 -6 49 33 16 45 50 -5 15 23 -8 38 25 13 38 52 -14 38 21 17 47 27 20 48 31 17 mean 3.167 std deviaition 15.5729 std error= std dev/(n)^(1/2) 4.4955 t stat= (d)/std error 0.7044 p value = 0.4958

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