Given a standard normal distribution, find the area under the curve which lies
a) To the left of a = 1.43;
b) To the right of z = -0.89:
c) Between z = -2.16 and z = - 0.65;
d) To the left of; = -1.39;
e) To the: right of z = 1.90:
T) Between z = -0.48 and z = 1.74.