The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 117 and standard deviation of 26 . Someone qualifies as having Stage 2 high blood pressure if their...

The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 117 and standard deviation of 26 .

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) Stage 1 high BP is specified as systolic BP between 140 and 160. What percentage of adults in the US qualify for stage 1? Give your answer rounded to two decimal places.

(c). Your doctor tells you you are in the 30th percentile (e.g. bottom 30%) for blood pressure among US adults. What is your systolic BP? Give your answer rounded to two decimal place