document.write( "Question 360417: From surveys we know that 45% of dentists use nitrous oxide (laughing gas) in their practice. If we select many random samples of 10 dentists, on average how many of them would you expect to use laughing gas in their practice? A. 5. B. 4.5. C. Impossible to tell. D. 2 \n" ); document.write( "
Algebra.Com's Answer #257343 by robertb(5830)\"\" \"About 
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B. 4(If we're going to follow rounding-off rules.) \n" ); document.write( "
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