The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 118 and standard deviation of 21 .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? Give your answer rounded to two decimal places.b. If you sampled 2000 people, how many would you expect to have BP> 160? Give your answer to the nearest person.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?
