Question

Determine the area under the standard normal distribution curve between z=1.25 and z= -1.85

Answer 1

$$P(-1.85<Z<1.25)=\Phi(1.25)-\Phi(-1.85)$$

$$\approx0.89435-0.03216=0.8622$$

The area under the standard normal distribution curve between z=1.25 and z= -1.85 is 0.8622.