(Solved): A test of intelligence is given to a subject. The subject scores a 110 on the first administration. ...

A test of intelligence is given to a subject. The subject scores a 110 on the first administration. Six months later, the same subject is given the test again and receives a score of 75. After another six months have passed, the subject is given the test one last time and receives a score of 138 . What conclusions can be drawn from these scores? The scores are valid. The scores have been replicated. The scores are not reliable. The scores are reliable.