document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1128928>Question 1128928</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A silver dollar is flipped twice. Calculate the probability of each of the following occurring: <BR>\n" );
document.write( "a head on the first flip <BR>\n" );
document.write( "a tail on the second flip given that the first toss was a head <BR>\n" );
document.write( "two tails <BR>\n" );
document.write( "a tail on the first and a head on the second <BR>\n" );
document.write( "a tail on the first and a head on the second or a head on the first and a tail on the second<BR>\n" );
document.write( "at least one head on the two flips A </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #745471 by </B><A HREF=/tutors/aboutme.mpl?userid=Quadratic1600><B>Quadratic1600(28)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Quadratic1600><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Quadratic1600><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=745471\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi\r<BR>\n" );
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document.write( "a) Ok so for the first question there is a 50/50 chance of heads/tails<BR>\n" );
document.write( "So the probability is 0.5 or 1/2\r<BR>\n" );
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document.write( "b) The probability is still 0.5 because the second event isn't dependent on the first so the probability is still 0.5\r<BR>\n" );
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document.write( "c) Probability of two tails is 0.5 x 0.5 = 0.25\r<BR>\n" );
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document.write( "d) It is still 0.5 x 0.5 = 0.25\r<BR>\n" );
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document.write( "e) So 0.5 x 0.5 and 0.5 x 0.5 = 0.25 + 0.25 = 0.5\r<BR>\n" );
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document.write( "f) Sample space<BR>\n" );
document.write( "HH 0.25<BR>\n" );
document.write( "TH 0.25<BR>\n" );
document.write( "HT 0.25<BR>\n" );
document.write( "TT 0.25\r<BR>\n" );
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document.write( "0.25 x 3 = 0.75\r<BR>\n" );
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document.write( "Hope this helps\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );