he aim of a study is to test the ratio of variances in the weight of two groups of rats being under a certain drugs A ( group 1) and B ( group 2). A random sample of 17 rats was selected from group 1and 11 rats from group 2, Then their weight were recorded. The results are shown in the following table sd Median Mean n 1.05 3.0 3.5 17 group 1 1.15 2.0 2.20 11 group 2 F19.16,0.025=0.386 F15,12,0.05 =0.404 F16.10,0.025=0.335 F19,16,0.05=0.451 F15,12,0.1 0.496| F16,10,0.05 =0.401 F16,19,0.025 0.371 F12.15,0.05 =0.382 F10,16,0.0025 =0.286| F16.19,0.05=0.437 F1215,01=0.475 F10,16,0.05 =0.354 Construct a 95% confidence interval for the ratio of the variances. [ Write only the final result in the box below