Question

Determine the total area under the standard normal curve in parts ​(a) through ​(c) below.

​(a) Find the area under the normal curve to the left of z=−2 plus the area under the normal curve to the right of z=2. The combined area is ____ ​(Round to four decimal places as​ needed.)

​(b) Find the area under the normal curve to the left of z=−1.54 plus the area under the normal curve to the right of z=2.54.The combined area is_____ (Round to four decimal places as​ needed.)

​(c) Find the area under the normal curve to the left of z=−0.27 plus the area under the normal curve to the right of z=1.40. The combined area is ___​(Round to four decimal places as​ needed.)

Answer 1

Note :Red for question(a)

Blue for question (b)

Green for question (c)

Hence the solution...