Consuelo Butler III
Homework: Practice
Exam 3
Question 22, 12.5.3
Part 1 of 2
HW Score: 10%, 3 of 30 points
Score: 0 of 1
Use the table below to find the percentage of data items in a normal distribution that lie a. below and b. above a z-score of 2.3.
Iz-score 0.10.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Percentile 53.98 57.9361.79 65.54 69.15 72.57|75.80|78.81 81.59 84.13
Z-score 111 12 1.3
1.4 1.5 1.6 1.7 1.8 1.9 2.0
Percentile 86.43 88.49 90.32 91.92 93.32 94.52 95.54 96.41 97.13 97.72
|z-score
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0
Percentile 98.21 98.61 98.93 99.18 99.38 99.53 99.65 99.74 99.81 99.87
5
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a. The percentage of data items that lie below the Z-score is
2