document.write( "Question 1079742: A coin is weighted so that heads is twice as likely to appear as tails. What is the probability of: Two heads in four tosses of the coin? \n" ); document.write( "

Algebra.Com's Answer #693993 by Fombitz(32388) $\"\"$ $\"About$

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Look at the possible tosses, there are 16 of them,
\n" ); document.write( "HHHH
\n" ); document.write( "HHHT
\n" ); document.write( "HHTH
\n" ); document.write( "HHTT<---
\n" ); document.write( "HTHH
\n" ); document.write( "HTHT<---
\n" ); document.write( "HTTH<---
\n" ); document.write( "HTTT
\n" ); document.write( "HHHH
\n" ); document.write( "THHT<---
\n" ); document.write( "THTH<---
\n" ); document.write( "THTT
\n" ); document.write( "TTHH<---
\n" ); document.write( "TTHT
\n" ); document.write( "TTTH
\n" ); document.write( "TTTT
\n" ); document.write( "There are six outcomes with two heads.
\n" ); document.write( " $\"P=6%282%2F3%29%282%2F3%29%281%2F3%29%281%2F3%29\"$
\n" ); document.write( " $\"P=8%2F27\"$
\n" ); document.write( " \n" ); document.write( "

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