A sonar operator on a battleship looks at a display that contains a spatial layout of the distribution of echoes from the surrou
nding ocean. A submarine appears as a more intense cluster of echoes. We can think of this as a signal detection problem. The sonar operator looks at the display an ________
The sonar operator looks at the display a forms an internal representation of the strength of the evidence that a submarine is present. If this exceeds an internal, subjective threshold,the sonar operator tells the captain that a submarine is present.
