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Exercise
ABy Admin
May 02'23
Answer
Solution: B
From the table the 93rd percentile comes from a z-score between 1.47 and 1.56. 1.47 implies a test score of 503 + 1.47(98) = 647.1. Similarly, 1.56 implies a score of 655.9. The only multiple of 10 in this range is 650. Abby’s z-score is then (650 – 521)/101 = 1.277. This is at the 90th percentile of the standard normal distribution.
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