Question: An experiment studies the number of insects that survive a certain dose of an insecticide, using several batches of insects of size n each. The

An experiment studies the number of insects that survive a certain dose of an insecticide, using several batches of insects of size n each. The insects are sensitive to factors that vary among batches during the experiment but were not measured, such as temperature level. Explain why the distribution of the number of insects per batch surviving the experiment might show overdispersion relative to a bin(n, π) distribution.

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