Find average number of days to complete recovery of knee

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Reference no: EM131813728

Question: The average number of days to complete recovery from a particular type of knee operation is 123.7 days. From his experience a physician suspects that use of a topical pain medication might be lengthening the recovery time. He randomly selects the records of seven knee surgery patients who used the topical medication. The times to total recovery were:

128 135 121 142 126 151 123

a. Assuming a normal distribution of recovery times, perform the relevant test of hypotheses at the 10% level of significance.

b. Would the decision be the same at the 5% level of significance? Answer either by constructing a new rejection region (critical value approach) or by estimating the p-value of the test in part (a) and comparing it to α.

Reference no: EM131813728

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