Question 1119281
 Find z if
(a) the normal curve area between 0 and z is 0.4884
normalcdf(0,0.4884) = 0.1874
----------------------------------------- 

(b) the normal curve area to the right of z is 0.86650
z = -invNorm(0.86650) = -1.10999774..
-----------
Cheers,
Stan H.
------------