document.write( "Question 1011547: A study of the amount of time it takes a mechanic to rebuild the
\n" ); document.write( "transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4
\n" ); document.write( "hours and the standard deviation is 1.77 hours. Assume that a random
\n" ); document.write( "sample of 40 mechanics is selected and the mean rebuild time of the
\n" ); document.write( "sample is computed. Assuming the mean times are normally distributed,
\n" ); document.write( "what percentage of sample means are greater than 7.7 hours?\r
\n" ); document.write( "\n" ); document.write( " A. 0.62%
\n" ); document.write( " B. 34.46%
\n" ); document.write( " C. 65.54%
\n" ); document.write( " D. 99.38%
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Algebra.Com's Answer #627217 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
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