Suppose we randomly select an adult. The random variable X = the person's diastolic blood pressure (in millimeters of mercury) can be modeled by a normal distribution with mean 70 and standard deviation 10. A healthy diastolic pressure for an adult is less than 80. Find P(X < 80).
0.4
0.3
34.1% 34.1%
0.2
13.6%
13.6%
2.2%
2.2%
0.1
0.1%
0.1%
0.0
-40
-30
-20
-10
р
1σ
20
30
40