The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 119 and standard deviation of 18.
Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high blood pressure?
b. If you sampled 500 people, how many would you expect to have BP> 160? c. Stage 1 high BP is specified as systolic BP between 140 and 160. What percentage of adults in the US qualify for stage 1?