Answer to Question #337147 in Statistics and Probability for Sag

Question

What is the normal probability distribution for P ( -0.21< z < 0.85)?

Answer 1

$$P ( -0.21< z < 0.85)=P ( z < 0.85)$$

$$-P ( z\le-0.21)\approx0.80234-0.41683$$

$$\approx 0.3855$$