Does a faster resolution retain better, or are fast cases easy?

Causal inferenceHard

Problem. Cases resolved in under 2 hours retain at 71%. Cases taking over 48 hours retain at 39%. Ops wants to hire more agents to cut resolution time. Is the relationship causal?

Before you reveal: say your answer out loud, as if you were in the real interview — get your reasoning across clearly first. There is no single correct answer: reading what the interviewer is really after and defending your own thinking is what makes an answer strong.