CONFIDENCE INTERVALS APPROXIMATION FOR THE DIFFERENCE AND RATIO OF THE LOGNORMAL MEDIANS THAT UTILIZED A COEFFICIENT OF VARIATION

This paper concerns the interval estimation of difference and ratio population medians for two independent lognormal distributions by using a known coefficient variation. The method used is based on standard approach. Using only sample information, difference, which had been calculated  got compared through an empirical simulation study. As shown, estimator with outperformance can be obtained utilizing variation (CV) not greater than 0.50. Received: July 9, 2023Accepted: September 7, 2023