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A sonar operator on a battleship looks at a display that contains a spatial layout of the distribution of echoes from the surrounding 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 ________

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Answer:

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.