document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1074240>Question 1074240</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Every day, a lecture may be canceled due to inclement weather with probability 0.05. Class cancelations on different days are independent.<BR>\n" );
document.write( "(a) There are 15 classes left this semester. Compute the probability that at least 4 of them get canceled.<BR>\n" );
document.write( "(b) Compute the probability that the tenth class this semester is the third class that gets canceled.<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 #688939 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=688939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Every day, a lecture may be canceled due to inclement weather with probability 0.05. Class cancellations on different days are independent.<BR>\n" );
document.write( "Binomial Problem with p = 0.05 and n = 15<BR>\n" );
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document.write( "(a) There are 15 classes left this semester. Compute the probability that at least 4 of them get canceled.<BR>\n" );
document.write( "P(4<= x <=15) = 1 - P(0<=x<=3) = 1 - binomcdf(15,0.05,3) = 0.0055<BR>\n" );
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document.write( "(b) Compute the probability that the tenth class this semester is the third class that gets canceled.<BR>\n" );
document.write( "P(2 cancelled in 1st 9) = binompdf(9,0.05,2) = 0.0629<BR>\n" );
document.write( "Then P(10th class cancelled) = 0.05<BR>\n" );
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document.write( "Ans:: P(condition) = 0.0629*0.05 = 0.0031<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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