document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1111535>Question 1111535</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Toss a biased coin: for this coin the probability that it will show tail is 0.7. We toss coin twice. Find probability  that we get no head </SPAN>\n" );
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document.write( "P(no head) = P(tails twice) = (0.7)(0.7) = 0.49<br><BR>\n" );
document.write( "P(exactly one head) = P(tails then heads OR heads then tails) = (0.7)(0.3)+(0.3)(0.7) = .21+.21 = .42<br><BR>\n" );
document.write( "P(two heads) = (0.3)(0.3) = 0.09<br><BR>\n" );
document.write( "Note that the probabilities of all possible cases sum to 1, as they must:<BR>\n" );
document.write( "0.49+0.42+0.09 = 1.00 </SPAN>\n" );
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