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Math Help - aproximation of a binomial

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    aproximation of a binomial

    Border patrol officers estimate that 10 percent of the vehicles crossing the US - Canada border carry undeclared goods. One day the officers searched 350 randomly selected vehicles. What is the probability that 40 or more vehicles carried undeclared goods?
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    Quote Originally Posted by terminator View Post
    Border patrol officers estimate that 10 percent of the vehicles crossing the US - Canada border carry undeclared goods. One day the officers searched 350 randomly selected vehicles. What is the probability that 40 or more vehicles carried undeclared goods?
    Where are you stuck in applying the normal approximation to the binomial distribution? Please show some effort.
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