document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=748918>Question 748918</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A taxi company claims that its drivers have an average of at least 12.4 years’ experience. In a study of 15 taxi drivers, the average experience was 11.2 years. The standard deviation was 2. At &#945; = 0.10, is the number of years’ experience of the taxi drivers really less than the taxi company claimed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #455670 by </B><A HREF=/tutors/aboutme.mpl?userid=reviewermath><B>reviewermath(1029)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=reviewermath><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=reviewermath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=455670\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Null Hypothesis, H0:  µ &#8805; 12.4<BR>\n" );
document.write( "Alternative Hypothesis, H1: µ < 12.4\r<BR>\n" );
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document.write( "&#945; = 0.10\r<BR>\n" );
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document.write( "Test Statistic, t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2811.2+-+12.4%29%2F%282%2Fsqrt%2815%29%29 ALIGN=MIDDLE  ALT=\"%2811.2+-+12.4%29%2F%282%2Fsqrt%2815%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > =  -2.3238<BR>\n" );
document.write( "Critical t:        -1.3450<BR>\n" );
document.write( "P-Value:           0.0179\r<BR>\n" );
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document.write( "Reject the Null Hypothesis because the p-value is less than 0.10.<BR>\n" );
document.write( "Sample provides evidence to reject the claim that drivers have an average of at least 12.4 years' experience.<BR>\n" );
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