It is the description of z as the lower quartile.
The Z value is negative, but area is always positive.
0.088508
From the table in the related link, Z = 1.43, area to left is 0.9236. This is read directly from the table.
0.1587 or 15.87%
2.82
It is the description of z as the lower quartile.
2.224
97.61%
The Z value is negative, but area is always positive.
z = 0.6903
0.088508
It is 0.
The area is 0.008894
From the table in the related link, Z = 1.43, area to left is 0.9236. This is read directly from the table.
0.1587 or 15.87%
Charts typically show and list the area to the left of the Z-Score value. To find the area to the right, just subtract the Z-Score value from 1; e.g. if the Z-Score value is .75 then take 1-.75 = .25.