Question

9:30 ohm.lumenlearning.com The systolic blood pressure or adults in the USA nearly normally distributed with a mean of 120 and standard deviation of 16. 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> 1607 Give your answer to the nearest person. Note: I had a bit of an issue encoding rounded answers, so try rounding both up and down if there's an issue! 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? Your doctor to 20th

Answer 1

let X is a to raudom Variable, distributed normally cwith mean u=120 Standard deviation o=16. a.) P(x>160) Pleau > 160-120) 16 = P(222.5) =1-P(2825) = 1-0.9938 = 0-0062 = 0.62% 160-120 b) for n=2000 P(x>160) =P -M olun 16732000 ). =P(2> Required "Number of people 2000 x 0-0062 = 12.4 ~12 members 160-120 P(140<x<160) P (140-120 <-M < 16 16 = P(1.25(2< 25) = P(z<25)-PC2<1.25 ) 0.9938 -0.8944 - 0.0994 -9.94%