document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1159702>Question 1159702</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Plastic sheets produced by a machine periodically monitored for possible fluctuations in thickness. If the true variance in thicknesses exceeds 2.25 square milli- meters, there is cause for concern about product quality. Thickness measurements for random sample 10 sheets produced in a particular shift were taken, giving the following results (in millimeters): 226 226 232 227 225 228 225 228 229 <BR>\n" );
document.write( "a. Find the sample variance. </SPAN>\n" );
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