document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=289348>Question 289348</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that the wrapper of a candy bar lists its weight as 8 ounces. The actual weights of individual candy bars naturally vary to some extent. Suppose that these actual weights vary according to a normal distribution wth mean 8.5 ounces and standard deviation .325 ounces\r<BR>\n" );
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document.write( "What proportion of he candy bars weigh less less than adverised 8 ounces?\r<BR>\n" );
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document.write( "If the manufacturer wants to decrease this proportion from a) by changing the man of its candy bar weigts, should it increase or decrease that mean?\r<BR>\n" );
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document.write( "If the manufacturer wants to decrease this proportion from a) by changing the standard deviation of its candy bar weight should it increase or decrease that standard deviation?\r<BR>\n" );
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document.write( "Not sure what I need to do ....Thank you for your help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #209594 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=209594\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that the wrapper of a candy bar lists its weight as 8 ounces. <BR>\n" );
document.write( "The actual weights of individual candy bars naturally vary to some extent. Suppose that these actual weights vary according to a normal distribution wth mean 8.5 ounces and standard deviation .325 ounces<BR>\n" );
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document.write( "What proportion of the candy bars weigh less less than adverised 8 ounces?<BR>\n" );
document.write( "Find the z-value of 8:<BR>\n" );
document.write( "z(8) = (8-8.5)/0.325 = -1.5385<BR>\n" );
document.write( "P(x < 8) = P(z < -1.5385) = 0.062 weigh less than then 8 ounces.<BR>\n" );
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document.write( "If the manufacturer wants to decrease this proportion from a) by changing the mean of its candy bar weights, should it increase or decrease that mean?<BR>\n" );
document.write( "Increase it.<BR>\n" );
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document.write( "If the manufacturer wants to decrease this proportion from a) by changing the standard deviation of its candy bar weight should it increase or decrease that standard deviation?<BR>\n" );
document.write( "Decrease it to pull the distribution close to the mean. <BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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