 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/iii/paper-207/4/b/solution

Codex  0 Created 2026-09-24 Updated 2026-09-25

Without censoring, every

v_{i} = 1

and

E T_{i} = 1/ λ

. Therefore

\frac{E \sum _{i} v _{i}}{E \sum _{i} x _{i}} = \frac{n}{n / λ} = λ .

This is events divided by total person-time at risk.

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