document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=927482>Question 927482</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that the average number of airline crashes in a country is 1.9 per half year.<BR>\n" );
document.write( "(a) What is the probability that there will be at least 3 accidents in the next half year?<BR>\n" );
document.write( "(b) What is the probability that there will be at least 6 accidents in the next year?<BR>\n" );
document.write( "(c) What is the probability that there will be at most 5 accidents in the next 1.5 years? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #562992 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=562992\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> average number of airline crashes in a country is 1.9 per half year<BR>\n" );
document.write( "POISSON distribution<BR>\n" );
document.write( "P( x &#8805; 3 in next .5yr) = 1 - poissoncdf(1.9, 2) = 1 -.7037 = .2963<BR>\n" );
document.write( "....<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.9%2F%28.5yr%29+=+3.8%2Fyr ALIGN=MIDDLE  ALT=\"1.9%2F%28.5yr%29+=+3.8%2Fyr\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "P( x  &#8805; 6 next year) = 1 - poissoncdf(3.8,5) = 1 - .8156 = .1944<BR>\n" );
document.write( ".......<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.9%2F.5+=+x%2F1.5 ALIGN=MIDDLE  ALT=\"1.9%2F.5+=+x%2F1.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >5, x = 5.7 (per 1.5yr)<BR>\n" );
document.write( "P( x &#8804; 5 in next 1.5yr) = poissoncdf(5.7, 5)= .495 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );