Question: Aggregate claims follow a lognormal distribution with parameters ,u, = 7.5. 0' = 2. The full credibility standard is set according to the methods of

Aggregate claims follow a lognormal distribution with parameters ,u, = 7.5. 0' = 2. The full credibility standard is set according to the methods of limited uctuation credibility so that actual aggregate claims are within 10% of expected aggregate claims 95% of the time. Determine the number of exposures needed for full credibility
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