Question

The standard normal curve shown below is a probability density curve for a

continuous random variable. This means that the area underneath the entire
curve is 1. What is the area of the shaded region between the two z-scores
indicated in the diagram? z=-1.2 z=0.85
A.0.8937
B.0.6825
C.0.4263
D.0.6375
E.0.6872

Answer 1

E

Explanation:

Here, we want to find the area of the shaded portion on the graph.

That would be P(-1.2<z<0.85)

we complete this by checking these values on the standard score table as follows;

P( z< 0.85) - P(z<-1.2) = 0.68727