2. (Comparing 2 means - Ch 7.3 - 8 points) To check the assumption of roughly normal data, comment on the two histograms below (data are from question 1). Based on the modes, skew and outliers you see (or don't see), could these samples have come from a normal distribution? Frequency 3 4 5 0 1 T T Z T Control group 50 60 70 80 90 90 Heart Rate (beats/min) Frequency 0 1 2 3 4 5 50 50 9 7 Hypertension group 60 70 80 90 Heart Rate (beats/min)