You can
put this solution on YOUR website!
What you want is the z-ccore on the x axis such that the area
under the normal curve to the left of it is exactly 0.5, so that
the area under the normal curve to the left of any z-score right
of it will be greater than 0.5.
All the area under the normal curve (between the curve and the
x-axis is equal to 1. Since 0.5 is half of 1, the z-score on the
x-axis that is right in the middle of the graph is 0.