Solution:
We are required to determine the area under the standard normal curve that lies to the left of the given z- values.
Since the area lies to the left, the required area will be p(x < Z)
(a) Z = 0.37
p(x<0.37) = 0.64431
(b) Z=1.37
p(x<1.37) = 0.91466
(c) Z = 0.29
p(x<0.29) = 0.61409
(d) Z= -1.12
p(x< -1.12) = 0.86864