document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=454531>Question 454531</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help me please!\r<BR>\n" );
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document.write( "A cruise ship has a 74% chance of having leftover rooms the week before the cruise.  There are 25 cruise ships setting sail this month.\r<BR>\n" );
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document.write( "What is the mean and the standard deviation for this approximation? </SPAN>\n" );
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document.write( "A cruise ship has a 74% chance of having leftover rooms the week before the cruise. There are 25 cruise ships setting sail this month. <BR>\n" );
document.write( "What is the mean and the standard deviation for this approximation?<BR>\n" );
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document.write( "mean = np = 25*0.74 = 18.5<BR>\n" );
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document.write( "std = sqrt(npq) = sqrt(18.5*0.26] = 2.193..<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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