In each case, determine the value of the constant c the makes the probability statement correct.
a. Ф(c) = 0.9838
b. P (0≤ Z ≤ c) =0.291
c. P (c ≤ Z) = 0.121
d. P (-c ≤ Z ≤ c) = 0.668
e. P(c ≤ │Z│) = 0.016