Question

around what percentage of adults have a blood pressure of 160 or higher of mean is 120 and standard deviation is 23

Answer 1

Hi,

Explanation:

I suppose the blood pressure follows a normal law

`Z_0=(X-\mu)/(\sigma) =(160-120)/(23) =1.739130434...\approx{1.74}\\\\p(X > 160)\\=1-p(X < 160)\\=1-p(Z < 1.74)\\=1-0.9591\\=0,0409\\\\\approx{4\%}`