Answer: 84.61%
Explanation.
Refer to the diagram shown below.
When the z-score is z = 0, then the area under the distribution curve is 50%, which corresponds to the mean, μ.
The given z-score is greater than zero, so the shaded area is 34.61%. to the right of z=0
The area to the left of z = 1.02 is 50% + 34.61% = 84.61%.
This percentage represents the people with IQs at or lower than Atfif's score.
