document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=117016>Question 117016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can anyone help me with this?  I have no idea which or how to formulate this.   I haven't gotten this out of a text - it's homework - help:(\r<BR>\n" );
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document.write( "A consumer electronics firm has developed a new type of remote control button that is designed to operate before becoming intermittent. A random sample of 35 of new buttons resulted in a mean of 1,241.2 hours of continuous service with a standard deviation of 110.8 hours. The current best remote control button in the market has a mean life of 1200 hours. Can we conclude that the new remote control button is superior to the current best product in the market? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #85153 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=85153\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A consumer electronics firm has developed a new type of remote control button that is designed to operate before becoming intermittent. A random sample of 35 of new buttons resulted in a mean of 1,241.2 hours of continuous service with a standard deviation of 110.8 hours. The current best remote control button in the market has a mean life of 1200 hours. Can we conclude that the new remote control button is superior to the current best product in the market?<BR>\n" );
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document.write( "Ho: mu = 1200<BR>\n" );
document.write( "Ha: mu > 1200<BR>\n" );
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document.write( "Assume alpha = 0.05; Then critical z-value = 1.645<BR>\n" );
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document.write( "Test Statistic: <BR>\n" );
document.write( "z(1241.2) = (1241.2-1200)/sqrt(35) = 6.96<BR>\n" );
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document.write( "Conclusion: Reject Ho<BR>\n" );
document.write( "Conclusion: Strong statistical evidence the new product is better than the old.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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