If the Reliability Coefficient for a Set of Test Scores

Multiple Choice

If the reliability coefficient for a set of test scores is .90, we know that

A) 90 % of the variance is true variance; 10 % is unknown.
B) 90 % of the variance is true variance; 10 % is error.
C) 90 % of the variance is true variance; 10 % is reliable.
D) 81 % of the variance is true variance; 19 % is error.
E) 81 % of the variance is true variance; 19 % is unknown.