Thinking about the areas of a Standard Normal Distribution, if a z value is negative, is the area to the left of z less than 0.5000, greater than 0.5000 or equal to 0.5000?
A typical plot of the standard normal distribution is shown in the figure below. The curve is symmetric about z = 0, and the total area under the curve is 1.
It follows that if the value of z is negative, the area to the left of z will be less than 0.5.
Answer: The area to the left of z is less than 0.5000