document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=557628>Question 557628</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An independent measures research study was used to compare two treatment conditions with n = 12 participants in each treatment. The first treatment had a mean of M =55 with a variance of s2 = 8, and the second treatment had M= 52 and s2 =4. Do these data indicate a significant difference between the two treatments? Use a two-tailed test with a = .05. ( Note: Because the two samples are the same size,the pooled variance is simply thew average of the two sample variance.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #362704 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=362704\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An independent measures research study was used to compare two treatment conditions with n = 12 participants in each treatment. <BR>\n" );
document.write( "The first treatment had a mean of M =55 with a variance of s2 = 8, and the<BR>\n" );
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document.write( "second treatment had M= 52 and s2 =4.<BR>\n" );
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document.write( " Do these data indicate a significant difference between the two treatments? Use a two-tailed test with a = .05. <BR>\n" );
document.write( "Note: Because the two samples are the same size,the pooled variance is simply thew average of the two sample variance.)<BR>\n" );
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document.write( "Ho: u1-u2 = 0<BR>\n" );
document.write( "Ha: u1-u2 # 0<BR>\n" );
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document.write( "I ran a 2-sample Ttest and got the following results:<BR>\n" );
document.write( "test statistic: t = 3<BR>\n" );
document.write( "p-value: 0.0071<BR>\n" );
document.write( "df: 19.8<BR>\n" );
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document.write( "Since the p-value is less than 5%, reject Ho.<BR>\n" );
document.write( "There is a significant difference between the 2 treatments.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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