document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=988977>Question 988977</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.Suppose that airplane engines operate independently in flight and fail with probability 1/5. Assuming that a plane makes a safe flight if at least one-half of its engines run, what is the probability that 4-engine plane has a successful flight?<BR>\n" );
document.write( "2.Suppose that airplane engines operate independently in flight and fail with probability 1/5. Assuming that a plane makes a safe flight if at least one-half of its engines run, what is the probability that 2-engine plane has a successful flight? <BR>\n" );
document.write( "3. A math teacher observes that on the average 3 students came to their 8-9AM class late. The probability that at most 2 students will be late in their 8-9AM class<BR>\n" );
document.write( "4.A math teacher observes that on the average 3 students came to their 8-9AM class late. The probability 5 students will be late in their 8-9AM class is____? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #609463 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=609463\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1.Suppose that airplane engines operate independently in flight and fail with probability 1/5. Assuming that a plane makes a safe flight if at least one-half of its engines run, what is the probability that 4-engine plane has a successful flight?<BR>\n" );
document.write( "Binomial Problem with n = 4 and p(fail) = 1/5<BR>\n" );
document.write( "Ans: P(0<= x <=2) = binomcdf(4,1/5,2) = 0.9728<BR>\n" );
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document.write( "2.Suppose that airplane engines operate independently in flight and fail with probability 1/5. Assuming that a plane makes a safe flight if at least one-half of its engines run, what is the probability that 2-engine plane has a successful flight? <BR>\n" );
document.write( "Ans: P(0<= x <=1) = binomcdf(4,1/4,1) = 0.8192<BR>\n" );
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document.write( "3. A math teacher observes that on the average 3 students came to their 8-9AM class late. The probability that at most 2 students will be late in their 8-9AM class<BR>\n" );
document.write( "Note: n not defined<BR>\n" );
document.write( "Ans: P(0<= x <=2) = binomcdf(n,3/n,2) = ?<BR>\n" );
document.write( "4.A math teacher observes that on the average 3 students came to their 8-9AM class late. The probability 5 students will be late in their 8-9AM class is<BR>\n" );
document.write( "Note:: n not defined<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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