A tourist bridge can only support the mass of 4200kg. We don’t know the pdf of the mass ($ X$ , in kg) of a single tourist. but we do know that $ E(X)=65$ , $ Var(X)=100$ . find good approximation to the probability that the total mass of 64 randomly selected tourists, is more than 4200kg.
As far as I understand this statement seems to imply the use of central limit theorem. May be I am wrong, and if I am right I am unable to use central limit theorem to answer question. Please guide me .
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