Question

Find the area under the standard normal curve to the right of z 1.25:

A) 0.1056
B) 0.3944
C) 0.8944
D) 0.6056

Answer 1

Using a z-table, the area to the left of z = 1.25 is found, and then subtracted from 1 to get the area to the right, which is 0.1056; therefore, the correct answer is A) 0.1056.

Step-by-step explanation:

To find the area under the standard normal curve to the right of z = 1.25, one can use a z-table or a statistical calculator command like invNorm. The z-table provides the area to the left of a given z-score. Subtracting this value from 1 gives the area to the right.

For z = 1.25, the z-table typically shows an area to the left of approximately 0.8944. Subtracting this from 1 we get 1 - 0.8944 = 0.1056. Therefore, the correct answer is A) 0.1056.