Two different formulas of an oxygenated motor fuel are being tested to study their road octane numbers. The variance of road octane number for formula 1 iso = 1.5, and for formula 2 it is o = 1.2. Two random samples of sizeny = 15 and nx = 20 are tested, and the mean octane numbers observed are. Ti = 88.9 fluid Ounces and I = 91.7 fluid Ounces. Assume normality (a) Test the hypotheses Ho: Mi = Hy versus H: