Chapter 6. Research shows that the mean systolic blood pressure measurement (SBPM) among males in the United States is 120 mm with a variance of 196 mm². Let us assume that the distribution of the SBPM is bell-shaped. Let X = value of an individual's SBPM. Unless otherwise specified, write your answers with two places after decimal point.

1. The approximate distribution of X is X ~N( , )
2. Find the probability (in % terms) that a randomly selected male has lower than 100 SBPM value. %
3. Find the probability (in % terms) that a randomly selected male has between 110 and 135 SBPM measurement. %
4. Find the third quartile SBPM value.