document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172111>Question 1172111</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Among 140 middle school students, 90 like chocolate ice cream, 70 like strawberry ice cream, and 55 like both. A middle school student is randomly selected.\r<BR>\n" );
document.write( "\n" );
document.write( "Is liking chocolate and strawberry ice cream independent events? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #797042 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=797042\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(both)=p(c)*p(s) if independent<BR>\n" );
document.write( "-<BR>\n" );
document.write( "p(c or s)=p(c)+p(s)+p(both), <BR>\n" );
document.write( "so putting it in student number<BR>\n" );
document.write( "p(c or s)=90+70-55 (55 is double counted)<BR>\n" );
document.write( "and 160-55=115 students that like one or the other.<BR>\n" );
document.write( "-<BR>\n" );
document.write( "so 55/140=(90/140)* (70/140) if independent events<BR>\n" );
document.write( "55/140=45/140, which it isn't, so not independent events </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );