document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1043029>Question 1043029</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean incubation time for a type of fertilized egg kept at 100.6 degrees Fahrenheit is 22 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 2 days. \r<BR>\n" );
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document.write( "A) What is the probability that a random selected fertilized egg hatches in less than 20 days? Round to four decimal places as needed.\r<BR>\n" );
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document.write( "B) What is the probability that a randomly selected fertilized egg hatches between 18-22 days? Round to four decimal places as needed.\r<BR>\n" );
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document.write( "C) What is the probability that a randomly selected fertilized egg takes over 24 days to hatch? Round to four decimal places as needed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #658566 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=658566\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The z-valueis (x-mean)/sd<BR>\n" );
document.write( "Less than 20 days is (20-22)/2=-1, and it is the probability z is less than -1 or 0.1587.<BR>\n" );
document.write( "Between 18 and 22 days is z between -2 and  0, and that is 0.4772.<BR>\n" );
document.write( "More than 24 days is z >1, and that is the same as z<-1, or 0.1587.<BR>\n" );
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