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ZOOM c) (summer) (winter) (summer) (winter) Ho: VN02 VS. HA: at significance level 0.01. Determine whether you can * N02 assume the variances are equal or unequal based on your answer to part b). Just use an appropriate R function for this problem but report the output. Comment in the context of air quality during summer and winter. d) Construct a 99% bootstrap confidence interval for CMAD, the mean absolute deviation, for summer ozone E IXiil concentration. Use the estimator MAD = 1-1 . Include units and interpret your interval in the context of this n problem. Plot your bootstrap sampling distribution for MAD.