Question

Determine the area under the standard normal curve that lies to the left of the following z score. Use a table if necessary. Round your answer to four decimal places.
z = 1.57

Answer 1

We are asked to determine the area under the standard normal curve that lies to the left of the following z score of 1.57. in this case, we can use the rules of integration as this is related to area under the curve:

1/2+1/π * integral of ( e−z^2 dz0 from 0 to x/2  where z=1.5

Answer is 0.8665