Find the area under the standard normal curve between z=−1.11

Question

and z=2.8
. Round your answer to four decimal places, if necessary.

Answer 1

To find the area under the standard normal curve between z = -1.11 and z = 2.8, we will use a standard normal distribution table or calculator.

Using a standard normal distribution table, we find the area to the left of z = -1.11 is 0.1340 and the area to the left of z = 2.8 is 0.9974.

To find the area between z = -1.11 and z = 2.8, we subtract the area to the left of z = -1.11 from the area to the left of z = 2.8:

0.9974 - 0.1340 = 0.8634

Therefore, the area under the standard normal curve between z = -1.11 and z = 2.8 is approximately 0.8634.