The following are the burning times (in minutes) of chemical flares of two different formulations. The design engineers are interested in both the mean and variance of the burning times. _ Typel | Type2 | 60 | 77 | 64 | 56 | | 76 | 67 | 71 | 69 | | 52 | 59 | 83 | 74 | | 66 | 70 | 59 | 82 | 82 | 65 | 65 | 79 | a) Test the hypothesis that the two variances are equal. Use @ = 0.05. b) Using the results of a), test the hypothesis that the mean burning times are equal. Use & = 0.05. What is the P-value for this test? c) Discuss the role of the normality assumption in this