document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=235129>Question 235129</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The pretzel pack company advertized that their pretzels weigh 2.5 ounces. The weights are normally distributed with mean 2.5 ounces and standard deviation 0.15 ounces. For a pretzel pack selected at random find the probabilty that it weighs less than 2.2 ounces and find the probability that it weighs more than 2.8 ounces. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #173377 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=173377\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The pretzel pack company advertized that their pretzels weigh 2.5 ounces. <BR>\n" );
document.write( "The weights are normally distributed with mean 2.5 ounces and standard deviation 0.15 ounces. <BR>\n" );
document.write( "For a pretzel pack selected at random find the probabilty that it weighs less than 2.2 ounces and find the probability that it weighs more than 2.8 ounces.<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "z(2.2) = (2.2-2.5)/0.15 =-2<BR>\n" );
document.write( "z(2.8) = (2.8-2.5)/0.15 = 2<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "P(2.2 < x < 2.8) = P(-2 < z < 2) = 0.9545<BR>\n" );
document.write( "=============================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );