Question

5. A statistics exam was given. Calculate the percentile for each of the three students below:
   1. Rachel's z-score was -2.10.
   2. Ben's z-score was +.6.
   3. Ashley's z-score was 1.85.

Answer 1

a) z = -2.10

P(z = -2.10) =

Using excel function:

= NORM.S.DIST(-2.1, 1)

= 0.0179 = 1.79%

b) z = +0.6

P(z = 0.6) =

Using excel function:

= NORM.S.DIST(0.6, 1)

= 0.7257 = 72.57%

c) z = 1.85

P(z = 1.85) =

Using excel function:

= NORM.S.DIST(1.85, 1)

= 0.9678 = 96.78%