document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=482093>Question 482093</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 8.	A sample of 65 observations is selected from one population. The sample mean is 2.67 and the sample standard deviation is .75. A sample of 50 observations is selected from a second population. The sample mean is 2.59 and the sample standard deviation is .66. Conduct the following test using 95% level of confidence. Z-test for Unpaired data<BR>\n" );
document.write( "a.	Is it a 1 or 2 tail test<BR>\n" );
document.write( "b.	Compute the statistical calculation<BR>\n" );
document.write( "c.	What is your decision regarding H1<BR>\n" );
document.write( "d.	What is the P-value\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 #330136 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=330136\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A sample of 65 observations is selected from one population. The sample mean is 2.67 and the sample standard deviation is .75. A sample of 50 observations is selected from a second population. The sample mean is 2.59 and the sample standard deviation is .66. Conduct the following test using 95% level of confidence. Z-test for Unpaired data<BR>\n" );
document.write( "a. Is it a 1 or 2 tail test::: 2 tail<BR>\n" );
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document.write( "b. Compute the statistical calculation<BR>\n" );
document.write( "Ho: u1-u2 = 0<BR>\n" );
document.write( "H1: u1-u2 is not 0<BR>\n" );
document.write( "critical value: +/-1.96<BR>\n" );
document.write( "test statistic: z = (2.67-2.59)/sqrt[(0.75^2/65)+(0.66^2/50)] = 0.6071<BR>\n" );
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document.write( "c. What is your decision regarding H1: fail to reject Ho; reject H1<BR>\n" );
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document.write( "d. What is the P-value<BR>\n" );
document.write( "p-value = 2*normalcdf(0.6071,100) = 0.5438<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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