document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1050446>Question 1050446</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean incubation time of fertilized eggs is 19 days. Suppose the incubation times are approximately normally distributed with a standard deviation of 1 day.\r<BR>\n" );
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document.write( "&#8203;(a) Determine the 16th percentile for incubation times.<BR>\n" );
document.write( "&#8203;(b) Determine the incubation times that make up the middle 97% of fertilized eggs.\r<BR>\n" );
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document.write( "How can I solve this (preferably) using a TI calculator? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #666030 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=666030\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) z = invNorm(.16)-.9945 Use Your TI<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%28x+-+mu%29%2Fblue%28sigma%29 ALIGN=MIDDLE  ALT=\"z+=blue+%28x+-+mu%29%2Fblue%28sigma%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "0r<BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=blue%28sigma%29%2Az+%2B+mu=blue+%28x%29 ALIGN=MIDDLE  ALT=\"blue%28sigma%29%2Az+%2B+mu=blue+%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2A-.9945+%2B+19+=+18.0054 ALIGN=MIDDLE  ALT=\"1%2A-.9945+%2B+19+=+18.0054\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 18days<BR>\n" );
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document.write( "b middle 97%:  from .015 to .985 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28100-.97%29%2F2+=+.015 ALIGN=MIDDLE  ALT=\"%28100-.97%29%2F2+=+.015\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "z = invNorm( 98.5)= 2.17 and invNorm(.015)= -2.17<BR>\n" );
document.write( " P(-2.17 &#8804; z &#8804; 2.17).<BR>\n" );
document.write( "TI syntax is normalcdf(smaller z, larger z) <BR>\n" );
document.write( "P(-2.17 &#8804; z &#8804; 2.17) = normalcdf(-2.17, 2.17) Use Your TI\r<BR>\n" );
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