The percentage of adults who have at some point in their life been told that they have hypertension is 23.53%
(a) If 13 adults are randomly selected, find the probability that between 1 and 3 inclusive of them have been told that they have hypertension.
(b) In a group of 280 adults, find the mean number that have been told that they have hypertension.
(c) In a group of 280 adults, find the standard deviation of the number that have been told that they have hypertension.
(d) Suppose that a group of 280 adults are randomly selected, and 83 of them have been told that they have hypertension. Is this a significantly high number that would perhaps suggest that the given percentage of adults who have been told that they have hypertension (i.e., 23.53%) is not correct?