1) A diagnostic test is reported to have 70% specificity. It means that the test:

2) A diagnostic test is reported to have 70% sensitivity. It means that the test:

3) If the results of a measure agree with a known standard, the measure is said to be:

A.Valid

B.Reliable

C.Accurate

D.Precise

4) For a new diagnostic test, out of 100 known cases of the disease, 80 cases yield positive results. For the 200 controls known to be free of the disease, 40 yield positive results. Based on these data, the specificity and false positive rates of the test are, respectively