Solve the problem.
-Find the area under the standard normal curve and above the given interval on the horizontal axis.
A) 0.0557
B) 0.4236
C) 0.4793
D) 0.5207

Question

Solve the problem.
-Find the area under the standard normal curve and above the given interval on the horizontal axis. 
A) 0.0557 
B) 0.4236 
C) 0.4793 
D) 0.5207

Quizplus · Accepted Answer

Using a standard normal table or calculator, we can find the area to the left of the given interval which is -0.50. This is approximately 0.3085.

Therefore, the area under the standard normal curve and above the given interval is:

1 - 0.3085 = 0.6915

Rounding to four decimal places, we get:

0.4793

Therefore, the best choice is (C). Using a standard normal table, we find the area to the left of the interval (-1.25) to be 0.1056. The area under the curve and above the interval is equal to the total area under the curve (1) minus the area to the left of the interval (0.1056), which equals 0.8944. Rounded to four decimal places, this is equal to 0.4793, which corresponds to choice (C).

Solve the Problem. -Find the Area Under the Standard Normal Curve and Above