document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311675>Question 311675</A>: <I><SPAN STYLE=\"word-break: break-all;\"> To test the null hypothesis that the average lifetime for a particular brand of bulb is 700 hours versus the alternative that the average lifetime is different from 700 hours, a sample of 80 bulbs is used. If the standard deviation is 40 hours and &#945; is equal to 0.05, what values for x  will result in rejection of the null hypothesis (show all work).  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222939 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=222939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To test the null hypothesis that the average lifetime for a particular brand of bulb is 700 hours versus the alternative that the average lifetime is different from 700 hours, a sample of 80 bulbs is used. <BR>\n" );
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document.write( "If the standard deviation is 40 hours and &#945; is equal to 0.05, what values for x will result in rejection of the null hypothesis<BR>\n" );
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document.write( "Ho: u = 700<BR>\n" );
document.write( "Ha: u is not equal to 700<BR>\n" );
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document.write( "You have to have the mean of a sample at this point of the problem solving.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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