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1. Of the people passing through an airport metal detector, 0.5% activate it; let X be the number among a randomly selected group of 400

1. Of the people passing through an airport metal detector, 0.5% activate it; let X be the number among a randomly selected group of 400 who activate the detector. a. What is the P(X = 3) approximately? b. What is the P(X > 1) approximately

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