SOLUTION: Hello, I really need some help with my statistics homework! Here is the data: Rooms: 230 Overbooking: 10%(230+23=253) Data reveals there is a 12% chance no show rate except when

Question 856212: Hello, I really need some help with my statistics homework! Here is the data:
Rooms: 230 Overbooking: 10%(230+23=253) Data reveals there is a 12% chance no show rate except when there is a conference. When there is a conference conducted the no show rate drops to 5%. Now here is the question:
1) What is the probability of more than 230 guests showing up at the 12% no show rate when 253 reservations are made?
I have tried to work this out in a spreadsheet, but I don't know how to find the 12% no show rate or the 5% no show rate and I get stuck on the rest of the problem after that, thank you!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1) What is the probability of more than 230 guests showing up at the 12% no show rate when 253 reservations are made?
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binomial problem with n = 253 and p(show = 0.88
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P(231<= x <= 253) = 1 - binomcdf(253,0.88,230) = 0.0595
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Cheers,
Stan H.
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