Question

Need help with z-scores

Answer 1

hope this helps b.0.8937

Answer 2

You need to look up the areas corresponding to the z-scores on a Standard Normal Distribution table.  Using a table which gives areas to the LEFT of the z-score  we work out the above shaded region area as follows

area = area to left for  z score 0.85 - area to left for z score -1.2

= 0.8023 -  0.1151 = 0.6827

Its Option D.