For a normal distribution, identify the z-score location that would separate the distribution into two sections so that there is
a) 70% in the body on the right hand side
b) 80% in the body on the right hand side
c) 75% in the body on the left hand side
d) 90% in the body on the left hand side

a. look up the z score corresponding to a .70 in the body of the table.

b. same as above only look up .20

c. z scores come from the left and go right. So, just look up .75 in the body of the table

d. look up .90

These are just exercises in locating z scores and reading the z table.

Also, draw a picture of each of the distributions and the percentages concerned. There are z values which will be negative.