Essay
The following table shows the heights (in inches)of individuals recorded recently for two families,the Williamses and the Thomases,in Chicago,Illinois: 
a.Construct a 95% interval estimate of the ratio of the population variances.
b.Using the computed confidence interval,test if the ratio of the population variances differs from one at the 5% significance level.Explain.
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A 100(1 - α)% confidence interval for th...View Answer
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