Question

Find the area of the shaded region. The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation 1. z= -0.88 z=1.28

Answer 1

Since the graph is missing but I can assume thag the shaded region would either Z<-0.88 and Z>1.28. Or Z>-0.88 and Z<1.28

Lets consider 1st situation the area below Z= -0.88 calculated by looking in the Z table shown below as 0.1894

And area vive Z=1.28 as 0.100. Now area under the shaded region for first condition would be 0.100+0.189=0.289

Condition 2,

Area above Z=-0.88 will be calculated as 1-0.189=0.811 and also area above Z=1.280 is 0.100 as calculated above , hence area between Z=-0.88 and Z=1.28 as 0.811-0.100=0.711

Note: first check your image or if you are confused then post in comment I will help you out.

The Z table shown below