In a certain pediatric population, systolic blood pressure is normally distributed with mean 115 mm Hg and

Question:

In a certain pediatric population, systolic blood pressure is normally distributed with mean 115 mm Hg and standard deviation 10 mm Hg. Find the probability that a randomly selected child from this population will have:
(a) A systolic pressure greater than 125 mm Hg.
(b) A systolic pressure less than 95 mm Hg.
(c) A systolic pressure below which 95% of this population lies.
(d) Interpret (a), (b), and (c).