According to the WHO MONICA Project the mean systolic blood pressure for people in China is 128 mmHg with a standard deviation of 23 mmHg (Kuulasmaa, Hense & Tolonen, 1998). Assume that systolic blood pressure is normally distributed.
a.) Would this answer be true? x is the random variable that defines the systolic blood pressure
b.) Would the probability of a person in China having a systolic blood pressure of greater than or equal to 135 mmHg. Be 0.6196. I just want to ensure I'm using the proper calculations.