document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1117263>Question 1117263</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For a sample with a mean of M = 50 and a standard deviation of s = 10, a z-score of z = +2.00 corresponds to X = 70.<BR>\n" );
document.write( "True<BR>\n" );
document.write( "False </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #732297 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=732297\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> formula for z-score is:\r<BR>\n" );
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document.write( "z = (x - m) / s\r<BR>\n" );
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document.write( "x is the score you are comparing to the mean.<BR>\n" );
document.write( "m is the mean.<BR>\n" );
document.write( "s is the standard deviation / standard error\r<BR>\n" );
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document.write( "when z = 2 and m = 50 and s = 10, you get:\r<BR>\n" );
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document.write( "2 = (x - 50) / 10\r<BR>\n" );
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document.write( "solve for x to get x = 20 + 50 = 70\r<BR>\n" );
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document.write( "therefore true.\r<BR>\n" );
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document.write( "the z-score tells you the number of standard deviations / standard errors you are above or below the mean.\r<BR>\n" );
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document.write( "the z-score of 2 tells you you are 2 standard deviations / standard errors you are above the mean.\r<BR>\n" );
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document.write( "2 * 10 = 20 + 50 = 70\r<BR>\n" );
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document.write( "standard error is involved with sample means which you will learn about later if you haven't already.\r<BR>\n" );
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document.write( "so, until then, the formula is z = (x - m) / s, where s is the standard deviation.\r<BR>\n" );
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