document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=543678>Question 543678</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assignment 2: ANOVA Summary Table\r<BR>\n" );
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document.write( "A psychologist believes that the kind of feedback a person receives about their work affects the quality of the work. You randomly assign 12 widget makers to one of three groups: positive feedback only, corrective feedback only, and no feedback. You track the number of widgets that each person makes correctly (out of 10) and obtain the following data:\r<BR>\n" );
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document.write( "Positive Feedback Only, Corrective Feedback Only, No Feedback <BR>\n" );
document.write( "5                               4                     5 <BR>\n" );
document.write( "4                               5                     4 <BR>\n" );
document.write( "4                               3                     6 <BR>\n" );
document.write( "7                               6                     2 \r<BR>\n" );
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document.write( "Use an analysis of variance (&#945; = 0.05) to determine whether this data is sufficient to conclude that there are significant differences between feedback conditions.\r<BR>\n" );
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document.write( "Make sure you include a complete ANOVA summary table. Also, report the appropriate null and research hypotheses and the critical value (alpha = 0.05). In addition, provide your statistical conclusion, including calculation of test statistic, in the APA format and conceptual conclusion in one to two sentences.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #354971 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=354971\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A psychologist believes that the kind of feedback a person receives about their work affects the quality of the work. You randomly assign 12 widget makers to one of three groups: positive feedback only, corrective feedback only, and no feedback. You track the number of widgets that each person makes correctly (out of 10) and obtain the following data:\r<BR>\n" );
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document.write( "Positive Feedback Only, Corrective Feedback Only, No Feedback <BR>\n" );
document.write( "5                               4                     5 <BR>\n" );
document.write( "4                               5                     4 <BR>\n" );
document.write( "4                               3                     6 <BR>\n" );
document.write( "7                               6                     2 \r<BR>\n" );
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document.write( "Use an analysis of variance (alpha = 0.05) to determine whether this data is sufficient to conclude that there are significant differences between feedback conditions.<BR>\n" );
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document.write( "Ho: The means are the same<BR>\n" );
document.write( "Ha: At least one mean is different<BR>\n" );
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document.write( "I ran an ANOVA program on a TI-84 and got the following:<BR>\n" );
document.write( "F = 0.2658<BR>\n" );
document.write( "p-value = 0.7724<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "df = 2<BR>\n" );
document.write( "SS = 1.66667<BR>\n" );
document.write( "MS = 0.58333<BR>\n" );
document.write( "Error:<BR>\n" );
document.write( "df = 9<BR>\n" );
document.write( "SS = 19.75<BR>\n" );
document.write( "MS = 2.19444<BR>\n" );
document.write( "Sxp = 1.4814<BR>\n" );
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document.write( "Conclusion:<BR>\n" );
document.write( "Since the p value is greater than 5%, fail to reject Ho.<BR>\n" );
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document.write( "Feedback does not effect wickets production.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "Make sure you include a complete ANOVA summary table. Also, report the appropriate null and research hypotheses and the critical value (alpha = 0.05). In addition, provide your statistical conclusion, including calculation of test statistic, in the APA format and conceptual conclusion in one to two sentences.\r<BR>\n" );
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