Question: Stroke index values were statistically analyzed for two samples of patients suffering from myocardial infarction. The sample variances were 12 and 10. There were 21

Stroke index values were statistically analyzed for two samples of patients suffering from myocardial infarction. The sample variances were 12 and 10.

There were 21 patients in each sample. Construct the 95 percent confidence interval for the ratio of the two population variances.

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