Question 1131547
a.probability 0 for a continuous distribution, since each point is dimensionless.
b. This is z< (x-mean)/sd which is z< 225/150 or z<1.5
This has probability 0.9332

c.  This has a z>-300/150 or z> -2 or probability of 0.9772
d.  This has z<-2 or z>+1.5 with probability 0.0228+0.0668 or 0.0896
e.  This is the complement of d or 0.9104 probability