Suppose that I want to use a test to help predict who will quit their jobs

before the end of the three-month probation period. One hundred new

applicants are hired and the test is administered to all of them the first day.

Half of them quit before the end of the 3-month probation period.

Discriminant function analysis is used to determine if the test is useful.

The chi-square is significant and the success rate of predicting the quitters

versus stayers is 80%.What would be the conclusion?