document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1039899>Question 1039899</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One of my questions I submitted earlier was sent in error, can you still help me with this last question?\r<BR>\n" );
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document.write( "Thanks\r<BR>\n" );
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document.write( "Boys and girls. Alice and Bill are planning to have three children. (Assume it is equally likely for a boy or a girl to be born.) Give the probability as a decimal.\r<BR>\n" );
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document.write( "(Fill in the blank below and give your answer to 3 decimal places.)\r<BR>\n" );
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document.write( "What is the probability that all three of their children will be girls?\r<BR>\n" );
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document.write( "The probability that all three children will be girls is .\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #654651 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=654651\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> B = child is a boy<BR>\n" );
document.write( "G = child is a girl\r<BR>\n" );
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document.write( "P(B) = 1/2 = 0.5<BR>\n" );
document.write( "P(G) = 1/2 = 0.5\r<BR>\n" );
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document.write( "Because the events are independent, ie the gender of child1 doesn't affect the gender of child2 or child3, this means\r<BR>\n" );
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document.write( "P(3 girls) = P(girl and girl and girl)<BR>\n" );
document.write( "P(3 girls) = P(girl)*P(girl)*P(girl)<BR>\n" );
document.write( "P(3 girls) = P(G)*P(G)*P(G)<BR>\n" );
document.write( "P(3 girls) = 0.5*0.5*0.5<BR>\n" );
document.write( "P(3 girls) = <font color=red size=5>0.125</font><BR>\n" );
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