Sample Size Required to Estimate the Ratio of Variances with Bounded Relative Error

Abstract

Sample sizes are given such that the ratio of variances from two independent normal populations can be estimated within 100 p per cent of the true ratio, with confidence 1 − α, for p = .2, .25, .33, .4, .5, .6, .75, 1.0, 1.5, 2.0; 1 − α = .90, .95, .99.