What is the approximate area of the unshaded region under the standard normal curve below? Use the portion of the standard normal table given to help answer the question. A normal curve with a peak at 0 is shown. The area under the curve shaded is negative 2 to positive 1. z Probability 0.00 0.5000 1.00 0.8413 2.00 0.9772 3.00 0.9987 0.02 0.16 0.18 0.82