document.write( "Question 747400: according to an estimate, 50% of the people in the united states have at least one credit card. if a random sample of 30 persons is selected, what is the probability that 19 of them has atleast one credit card?
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Algebra.Com's Answer #454895 by reviewermath(1029)\"\" \"About 
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probability = \"%28matrix%282%2C1%2C30%2C19%29%29%280.5%5E30%29+=+highlight%280.0508756%29+\" \n" ); document.write( "
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