document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=483926>Question 483926</A>: <I><SPAN STYLE=\"word-break: break-all;\"> •	State the null hypothesis Ho and the alternative hypothesis Ha that would be used for a hypothesis test related to each of the following statements: <BR>\n" );
document.write( "o	a. The mean age of the students enrolled in evening classes at a certain college is greater than 26 years. <BR>\n" );
document.write( "o	b. The mean weight of packages shipped on Air Express during the past month was less than 36.7 lb. <BR>\n" );
document.write( "o	c. The mean life of fluorescent light bulbs is at least 1600 hours. <BR>\n" );
document.write( "o	d. The mean strength of welds by a new process is different from 570 Ib per unit area, the mean strength of welds by the old process\r<BR>\n" );
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document.write( "Thank you very much<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #331157 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=331157\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> State the null hypothesis Ho and the alternative hypothesis Ha that would be used for a hypothesis test related to each of the following statements: <BR>\n" );
document.write( "o a. The mean age of the students enrolled in evening classes at a certain college is greater than 26 years.<BR>\n" );
document.write( "Ho: u <=26<BR>\n" );
document.write( "Ha: u > 26<BR>\n" );
document.write( "-------------------- <BR>\n" );
document.write( "o b. The mean weight of packages shipped on Air Express during the past month was less than 36.7 lb.<BR>\n" );
document.write( "Ho: u >= 36.7<BR>\n" );
document.write( "Ha: u < 36.7<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "o c. The mean life of fluorescent light bulbs is at least 1600 hours.<BR>\n" );
document.write( "Ho: u >= 1600<BR>\n" );
document.write( "Ha: u < 1600<BR>\n" );
document.write( "-------------------- <BR>\n" );
document.write( "o d. The mean strength of welds by a new process is different from 570 Ib per unit area, the mean strength of welds by the old process.<BR>\n" );
document.write( "Ho: u = 570<BR>\n" );
document.write( "Ha: u is to equal to 570<BR>\n" );
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document.write( "The Key idea in setting up Ho and Ha:<BR>\n" );
document.write( "The equal sign must ALWAYS appear in Ho.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );