document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=209309>Question 209309</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131931679/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Based on the information given for each of the following studies, decide whether to reject the null hypothesis. For each give the z-score cutoff (or cutoffs) and the comparison distribution at which the null hypothesis should be reject, the z-score on the comparison distribution for the sample score and your conclusion. Assume that all populations are normally distributed.\r<BR>\n" );
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document.write( "I cant get table on her e hopefully you will be able to see it in the text.<BR>\n" );
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document.write( "I am really confused aboutz-scores \r<BR>\n" );
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document.write( "Thanks  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #158233 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=158233\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z-scores are the distance a data element happens to be from<BR>\n" );
document.write( "the center of the distrubution of data.<BR>\n" );
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document.write( "Distance is always expressed in terms of some unit of measure.<BR>\n" );
document.write( "The unit you use for z-scores is the standard deviation of <BR>\n" );
document.write( "the distribution.<BR>\n" );
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document.write( "So if the z-score of a data element is 1 standard deviation<BR>\n" );
document.write( "to the right of the mean, the data element must be 1 standard<BR>\n" );
document.write( "deviation to the right.<BR>\n" );
document.write( "If the z-score of a data element is 1 standard deviation<BR>\n" );
document.write( "to the left of the mean, the element has a z-score of -1.<BR>\n" );
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document.write( "If you want further help, email me.<BR>\n" );
document.write( "Reply to stanbon@comcast.net<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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