What is the area below the standard normal curve to the right of 1.28?

a. -0.1

b. -0.9

c.  0.1

d.  0.9

The area below the standard normal density curve to the right of a z-value is 0.8315. What is that z-value?

a. -0.96

b.  0.04

c.  0.96

d. -0.04

What z-value corresponds to the 15th percentile?

a. -1.04

b.  1.04

c.  0.56

d.  0.44


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