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Please explain how you are determining when you make the z-score negative and when to make the z-score positive in the following answers: 7. The
Please explain how you are determining when you make the z-score negative and when to make the z-score positive in the following answers:
7. The z-score for the cumulative 20% of the data distribution.
0.20
0.5-0.20
0.3
z-score=
-0.85
8. The z-score for the upper 20% of the data distribution.
0.20
0.5-0.20
0.3
z-score=
-0.85
9. The z-score that corresponds to a cumulative value of .3974
0.5-0.3974
0.1026
z-score=
-0.26
10. The z-score that represents the cumulative value of .2984
0.5-0.2984
0.2016
0.53
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