Question 965773
Find the z score.
{{{Z=(x-mu)/sigma=(120-118)/9}}}
{{{Z=0.222}}}
Find the corresponding probability for that z-score.
{{{P[1]=0.5879}}}
That probability corresponds to blood pressures from 0 to 120 so you need to get the complement.
{{{P=1-P[1]}}}
{{{P=1-0.5879}}}
{{{P=0.412}}}