document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1145365>Question 1145365</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1). Based on long-run relative frequencies, approximately 51% of all births in the U.S. are boys. Assume independence. <BR>\n" );
document.write( "(a) If a woman has 3 children, find the probability that she has exactly 1 boy.<BR>\n" );
document.write( "(b) If a woman has 3 children, find the probability that she has 1 or more boys.\r<BR>\n" );
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document.write( "2). A slot machine has 3 wheels. Each wheel has 10 symbols, and each symbol is equally likely when the wheel is spun (assume the wheels act independently of each other). The middle wheel has 1 bell among its 10 symbols, while the left and right wheels have 4 bells each.<BR>\n" );
document.write( "(a) You win the jackpot if the wheels show all bells. What is the probability of winning the jackpot on any given spin?<BR>\n" );
document.write( "(b) Find the probability of obtaining exactly 2 bells on any given spin.<BR>\n" );
document.write( "(c) What is the probability that you get a bell on the first wheel or third wheel?\r<BR>\n" );
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document.write( "3). Worldwide, approximately 70% of smart phones run the Android operating system (A) while 30% run a non-Android operating system (A). Suppose 2 smart phones are randomly selected (assume independence).<BR>\n" );
document.write( "(a) Determine the probability that the first runs Android (A1) or the second runs Android (A2).<BR>\n" );
document.write( "(b) Determine the probability that exactly 1 runs Android<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 #766610 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52803)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=766610\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "One and only one problem per post.\r<BR>\n" );
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document.write( "Those who violate it, work against themselves.\r<BR>\n" );
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document.write( "With it, welcome to the forum (!)\r<BR>\n" );
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