document.write( "Question 729509: Approximately 70% of the Wisconsin population have type O blood. If 4 persons are selected at random to be donors, find P[at least one type O]. Round your answer to four decimal places. \n" ); document.write( "

Algebra.Com's Answer #853175 by ikleyn(53339) $\"\"$ $\"About$

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\n" ); document.write( "Approximately 70% of the Wisconsin population have type O blood.
\n" ); document.write( "If 4 persons are selected at random to be donors, find P[at least one type O].
\n" ); document.write( "Round your answer to four decimal places.
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document.write( "P[at least one type O] = 1 - P[no one type O] = 1 -  = 1 -  = 1 - 0.0081 = 0.9919.\r\n" );
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document.write( "This is an EXACT value - there is no need to round.\r\n" );
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document.write( "ANSWER.  P[at least one type O] = 0.9919.\r\n" );
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