The left-hand "tail" of the standard normal curve can be defined as the part
that lies at least 2 standard deviations to the left of the mean.
According to the empirical rule, approximately what percentage of the area
under the whole curve is in the left-hand tail? Round your answer to the
nearest tenth.
A. 16%
B. 5%
C. 0.1%
D. 2.5%