Compute the following probabilities using the z-score table. (a) P (Z < −0.74) (b) P(Z > 2.34) (c) P(0.25 < Z < 0.89)

Answer 1

a) P(z < -0.74) = 0.2297

b) P(z > 2,34) = P(z < -2.34) = 0.0096

c) P(0.25 < z < 0.89) = P(z < 0.89) - P(z < 0.25) = 0.8133 - 0.5987 = 0.2146.