False-positive and false-negative rates can be adjusted, and they are often complementary: Lowering one raises the other. List two situations in which false negatives are significantly more serious than false positives.

What will be an ideal response?

Typical answers will point to situations in which it’s much more important that the right person be granted access than that the wrong person be denied access (e.g., allowing an operator to access a nuclear power plant computer during a meltdown).