Question
A student catches 40 beetles in a field, marks them and releases them. A week later they catch 50 beetles; 8 are marked.
(a) Estimate the total population size. Show your working. [3] (b) State ONE assumption that must be met for this estimate to be valid. [1]
4 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.