A medical researcher is trying to determine whether the population variances of systolic blood pressure levels are the same for patients who take a new medication for
high blood pressure and patients who do not take the new medication. The control group consists of 29 patients with a sample variance in systolic blood pressure of
87.160. The treatment group, who is taking the new medication, consists of 21 patients with a sample variance in systolic blood pressure of 172.120.
Step 1 of 2: Construct a 90 % confidence interval for the ratio of the population variances of systolic blood pressure levels for the two group. Round the endpoints of
the interval to four decimal places, if necessary.
Answer
Lower Endpoint =
Upper Endpoint =
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