Robert scored an 87 on a recent mathematics placement test. John scored an 86 . The standard error of measurement of the test is 4 . What can we conclude about the two students' actual measures?
a. Robert's true score is higher than John's
b. John's true score is higher than Robert's
c. Robert's true score may be higher than John's
d. The two student's true scores are equal
Ans: c. Robert's true score may be higher than John's
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