Step 3: Compute for the Required Area. 0 4772 (Found on Ztable) Knowing this data: Area Required -2 0 The fact that the total area bounded by the curve is 1, and half of the normal curve is 0.5. Therefore, to solve for the required area, we subtract 0.4772 from 0.5. P(Z1.56) Step 1: Draw the Normal Curve. Area Required 1.55 0 Step 2: Locate the area in the Ztable given the Zscore value of 1.56. Area from Z-Table is 0.4406 This area is between 2: -1.56 and 2:0 Step 3: Calculate the Required Area. In this case 0.5 is added to 0.4406. 0.4405 Required Area: P(Z