document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1044547>Question 1044547</A>: <I><SPAN STYLE=\"word-break: break-all;\"> During the cold season,the sun is visible 25% of the time .The probability that the class of mathematicians enjoys a lesson is 70% when the sun is visible and only enjoys a lesson 30% when it is cloudy.What is the probability that the mathematicians will enjoy a lesson on a given cold day? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #659912 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=659912\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P(enjoys) = P(sun visible)*P(enjoys|sun visible) + P(sun not visible)*P(enjoys|sun not visible) = 0.25*0.70 + 0.75*0.30 = 0.40. </SPAN>\n" );
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