Answer:
The Vikings of Norway are the first Europeans known to have visited North America (u.s.)
The correct answer is; criterion validity.
Further Explanation:
Karen developed the test so that she can measure the hostility in her workplace. She used previous employees who had been terminated on the basis of anger management issues. This has a high degree of criterion validity.
Her test is based on the prediction of an outcome and not on just factual information. This does work in some cases but only when the behavior closely matches the behavior of a previous case used in developing the test. If the cases are not very similar the test may not be conclusive.
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Its about 2,320 miles long