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A research team conducted a study showing that approximately 25% of all businessmen who wear ties wear them so tightly that they actually reduce blood flow to the brain, diminishing cerebral functions. At a board meeting of 15 businessmen, all of whom wear ties, what are the following probabilities? (Round your answers to three decimal places. (a) more than two ties are too tight (b) no tie is too tight (c) at least 13 ties are not too tight

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  1. 28 June, 20:57
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    C. at least thirteen ties are to tight
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