3. For each of the cases below, involving areas under the standard normal curve, decide whether the first area is bigger, the second area is bigger, or both areas are equal.
(a) The area to the left of z = 0, or the area to the right of z = 0.1
(b) the area between z = -0.3 and 0.3, or the area between z = -0.5 and 0.5