Th 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 16 rats was selected from group 1and 13 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 3.516 group 1 1.15 2.0 2.20 13 group2 F19.16,0.025 0.386 F E.2005=0.404 F16,10,0.026 0.335 Foi6o=0. 151 7161201 0.490 F16.10,0.0 = 0.401. F16190026 0.371 FRI500,= 0.382 F10.16 0.025 = 0,286 ER19 0.437 12501=0.475|/ 10.16.005 -0.354 Construct a 95% confidence interval for the ritin ftie varangG (Hint because of the rounding select the closest interval (0.318 2063 a None of thesD

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