Comparing Scores. Three students take equivalent tests of sense of humor and, after the laughter dies down, their scores are calculated. Which is the highest relative score?
A. A score of 144 on a test with a mean of 128 and a standard deviation of 34.
B. A score of 90 on a test with a mean of 86 and a standard deviation of 18.
C. A score of 18 on a test with a mean of 15 and a standard deviation of 5.
z = (x - m)/s
(A) z = (144 - 128)/34 = 0.4706
Percentile score = 100 * P(z < ...
The highest relative score for a test to determine the sense of humor is determined. A complete, neat and step-by-step solution is provided.