Alex and Peter work in an air traffic control tower. They are assigned with the task of monitoring signals on the radar to detect incoming planes. Alex tells Peter that he detected a signal on the radar. However, Peter does not agree with Alex. After further checks, they concur that there was no signal on the radar. Signal detection theorists would label Alex's initial report that he detected a signal as a .

The correct answer is : False alarm.

Explanation:

It refers to a erroneous report of an emergency. In this case a the warning presented something that failed to happen. the person involved had an incorrect observation telling that a signal was present in a trial when in fact it was absent. It is when you think something dangerous is about to happen , but then the result is the opposite.

well 1 they have there leader that controls them