document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1180477>Question 1180477</A>: <I><SPAN STYLE=\"word-break: break-all;\"> employees at a construction and mining company claim that the mean salary of the company for mechanical engineers is less than that of its competitors at $95000. A random sample  of 30 for the company 's mechanical engineers has a mean salary of $85,000. Assume the population standard deviation is $6500 and the population is normally distributed.  a=0.05. Find H0 and H1. is there enough evidence to reject the claim </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #813397 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=813397\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=H%5B0%5D%3A+mu+=+95000 ALIGN=MIDDLE  ALT=\"H%5B0%5D%3A+mu+=+95000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=H%5B1%5D%3A+mu+%3C+95000 ALIGN=MIDDLE  ALT=\"H%5B1%5D%3A+mu+%3C+95000\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=+%28%28X-bar%29+-+mu%29%2F%28sigma%2Fsqrt%28n%29%29+=+%2885000+-+95000%29%2F%286500%2Fsqrt%2830%29%29+=+-8.4265 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28Z+%3C=+-8.4265%29+=+0.0000+%3C+0.05 ALIGN=MIDDLE  ALT=\"P%28Z+%3C=+-8.4265%29+=+0.0000+%3C+0.05\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the conclusion is to accept the alternate hypothesis, or reject the null hypothesis, <BR>\n" );
document.write( "and say that indeed the company's mean salary for mech. engineers is less than that of its competitors. </SPAN>\n" );
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