easy · GRE Verbal

A transit agency added real-time arrival displays. Riders reported less uncertainty even though average waiting time did not change.

Which statement best expresses the main idea?

  1. Arrival displays shortened waits but left uncertainty unchanged.
  2. Riders waited longer because the displays increased uncertainty.
  3. Arrival information reduced uncertainty without reducing wait time.
  4. The displays reduced both uncertainty and average waiting time.
  5. Average waits fell even though riders felt less certain.

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