document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=939584>Question 939584</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A manufacturer of electronic kits has found that the mean time required to assemble circuit tester is 3 hours. with a standard deviation of 0.20 hours. in the test of effectiveness of the new booklet, 15 circuit tester require a mean of 2.90 hours to complete the job. Assuming the population of times is normally distributed, and using the 0.05 level of significance.\r<BR>\n" );
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document.write( "a) should we conclude that the new booklet is effective ?\r<BR>\n" );
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document.write( "b) known or unknown ?\r<BR>\n" );
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document.write( "with solution thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #572608 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><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=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=572608\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi,\r<BR>\n" );
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document.write( "I can do it , but the answer is not short\r<BR>\n" );
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document.write( "you can contact e at:\r<BR>\n" );
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document.write( "mthman@gmail.com\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
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