Question

Rehab, Inc. is evaluating patient success results for its Northbrook and Southbrook locations. Each successfully treated 10 patients within the last year following elbow surgery. Total recovery times and % range of motion achieved are listed in Table 4E.6.
a. Build a 95% two-sided confidence interval for the differences of the average of the recovery times. Is there evidence to support that the facilities are different?
b. Build a 95% two-sided confidence interval for the ratio of the variance of recovery times. Is there evidence to support that the facilities are different?
c. Build a 95% two-sided confidence interval for the differences on the percentage of motion restored. Is there evidence to support that the facilities are different?


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  • CreatedSeptember 19, 2015
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