document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1161571>Question 1161571</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If Belson Electronic's new converter produces less than the 110 volts of their old product, they must redesign it. A sample of 303 converters generated a standard deviation of 47.3 volts. Set Alpha at 5 percent. a mean of 107.2 volts, with State and test the proper set of hypotheses. Is a redesign necessary? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #785171 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=785171\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assume random sample and independence of process<BR>\n" );
document.write( "Ho: voltage is 110<BR>\n" );
document.write( "Ha: it is not 110<BR>\n" );
document.write( "alpha=0.05 P{reject Ho|Ho true)<BR>\n" );
document.write( "test is a t 0.975 df=302* s/sqrt(n)=(mu new-mu old)/s/sqrt(n)<BR>\n" );
document.write( "critical value |t|>1.968<BR>\n" );
document.write( "t=(107.2-110)/47.3/sqrt(303)<BR>\n" );
document.write( "=-2.8*sqrt(303)/47.3<BR>\n" );
document.write( "=-1.03<BR>\n" );
document.write( "p=0.30<BR>\n" );
document.write( "Fail to rejected Ho and insufficient evidence to redesign. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );