Question

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 3500 people, how many would you expect to have BP> 160? Give your answer to the nearest person.
people

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?

Answer 1

This is an example of why some questions go unanswered.
Rather than post a question and learn how to solve it, a student posts a whole homework assignment, with no indication of any effort or work, and expects someone to go through a dozen questions, do all the work, and hand out all the answers. Good luck with that.