Ans both questions

3. Variation within a method used for testing a product is an essential factor in deciding whether the method should be employed. The data on Elmendorf tear strength, in grams, of two different vinyl floor coverings is displayed as followus Brand al Brand & 2592 2519 2439 924 576 2112 2144 2204 2176 228 2160 a. at the 5%, significance level, do the data provide sufficient evidence to conclude that the population standard deviations of tear strength differ for the two vingt floor coverings? ( (losmer: J.S = 0.413, C.V = 4.03) 6. Determine a 95%, confidence interval for the ratio of standard deviations of tear strength for Brand al and Brand B vinyl floor coverings. (answer: (32