document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=796325>Question 796325</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A final exam in MATH 121 has a mean of 73 with a standard deviation 7.80. If 34 students are randomly selected, find the probability that the mean of their test scores is less than 76. </SPAN>\n" );
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document.write( "z(76) = (76-73)/[7.8/sqrt(34)] = 2.2427<BR>\n" );
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document.write( "P(x-bar < 76) = P(z < 2.2427) = normalcdf(-100,2.2427) = 0.9875<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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