CAIE S2 2003 November — Question 2

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2003
SessionNovember
TopicApproximating the Poisson to the Normal distribution
TypeSimple probability using normal approximation
2 A certain machine makes matches. One match in 10000 on average is defective. Using a suitable approximation, calculate the probability that a random sample of 45000 matches will include 2,3 or 4 defective matches.
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