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Arrange the steps of a properly designed seeding experiment in order.
1. verify by tracer that the agent reached the target
2. specify the physical hypothesis to be tested
3. analyse the accumulated cases statistically
4. randomise the decision to seed each qualifying case

  • A.4 - 2 - 1 - 3
  • B.2 - 1 - 4 - 3
  • C.2 - 4 - 1 - 3
  • D.3 - 1 - 4 - 2

Answer: C

Omitting any step undermines the conclusion, and the tracer verification is the one most often left out. Without it a null result cannot be interpreted physically. Verification is the step most often omitted in practice.

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