Exhibits, Shows and Displays

What is the probability that everyone who shows up will have a seat if I accept reservations for 25, have 23?

I have 23 seats. Take reservations for 25. 90% of reservations show up. Probability that everyone who shows up will have a seat?

Public Comments

1. 90 percent of 25 is ... 22.5 ... so u have 23 seats and 22.5 show up... that is all the people that come will have a seat... 100% probabilty that every one gets a seat answerd upto best i understood
2. np = 25(.9) = 22.5 npq = 2.25 StdDv = sqrt (2.25) = 1.5 Prob (N = 25): Consider Z-score for (25 - 23) / 1.5 = 2 / 1.5 = 1.333. Prob (N = 24): Consider Z-score for (24 - 23) / 1.5 = 1 /1.5 = 0.667 Answer = 100% - Prob (N=25) - Prob (N=24)