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

E

Step-by-step 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

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: