Question 454531
Help me please! 
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. 
What is the mean and the standard deviation for this approximation?
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mean = np = 25*0.74 = 18.5
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std = sqrt(npq) = sqrt(18.5*0.26] = 2.193..
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Cheers,
Stan H.