posted by Raj on .
The percentage of adults who have been told at some point that they have hyptertension is 23.53%. If 10 adults are randomly selected, what is the probability that at least 8 have been told that they have hypertension?
To find the probability that 8 have hypertension is .2353 to the 8th power. However, since it is "at least 8", it must also include 9 and 10 (.2353^9 and .2353^10).
To find the probability of either 8, 9 or 10, add the three products.
I hope this helps. Thanks for asking.