document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=466188>Question 466188</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i NEED HELP PLEASE\r<BR>\n" );
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document.write( "Must state the five steps\r<BR>\n" );
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document.write( "Hypotheses<BR>\n" );
document.write( "critical value<BR>\n" );
document.write( "compute test value<BR>\n" );
document.write( "state whether you reject the null or not reject the null hypotheses<BR>\n" );
document.write( "Write a summary conclusion\r<BR>\n" );
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document.write( "Noise levels in Hospitals<BR>\n" );
document.write( "It was found that the standard deviation of the sound levels from 20 area designated as casualty doors was 4.1 dba and the standard devaiton of 24 areas desinated as operating theaters was 7.5 dba. At X=.05 can you substanitate the claim that there is a difference in the standard deviations?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #319527 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=319527\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It was found that the standard deviation of the sound levels from 20 area designated as casualty doors was 4.1 dba and the standard deviation of 24 areas designated as operating theaters was 7.5 dba.<BR>\n" );
document.write( "At X=.05 can you substanitate the claim that there is a difference in the standard deviations? <BR>\n" );
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document.write( "Ho: var1 - var2 = 0<BR>\n" );
document.write( "Ha: var1 - var is not 0 (claim)<BR>\n" );
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document.write( "I ran an F-test on the data and got the following:<BR>\n" );
document.write( "test statistic: F = 0.2988<BR>\n" );
document.write( "p-value = -.0097<BR>\n" );
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document.write( "Conclusion: Since the p-value is less than 5%, reject Ho.<BR>\n" );
document.write( "The test results support the claim.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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