A survey reported that 30% of adults in the US have hypertension (high blood pressure). A sample of 25 adults was studied. (20 points) a) What is the probability that exactly 6 of them have hypertension? b) What is the probability that more than 8 of them have hypertension? c) What is the probability that fewer than 4 have hypertension? d) Would it be unusual if more than 10 of them have hypertension? e) What is the mean number who have hypertension in a sample of 25 adults? f) What is the standard deviation of the number who have hypertension in a sample of 25 adults? 10.