Question

If you determine that for the graph of a std. normal distribution, the cumulative area to the left of a z score is 0.4, what is the cumulative area to the right?

Answer 1

The area under the graph of the normal distribution function equals to the probability. The total probability (total area) equals to 1.Thus cumulative area to the right of z-score would be
1 - 0.4 = 0.6