Suppose that Z follows an N(0, 1). In the following, state whether the probability is greater than 0.5, lower than 0.5, equal to 0.5, or if it is not possible to tell just by common sense, without computing the actual probabilities. Explain your reasoning.
a) P(Z < −2.44).
b) P(Z ≥ 1.44).
c) P(Z < 0).
d) P(−0.28 ≤ Z ≤< 0.14).