19. Let Z be a random variable distributed as the standard normal. Using the normal distribution table (Table A.4) determine the following probabilities:

(a) P(Z ≤ 2.11),

(b) P(Z ≥ −1.2),

(c) P(−1.58 ≤ Z ≤ 2.40),

(d) P(Z ≥ 1.96),

(e) P(Z ≤ −1.96).