The Undesirable Air Lines (UAL???) is notorious for its cost-cutting substandard customer service.Consequently, only 85% of the ticket holders will show up for a flight.The Air Lines workhorse, the Boring 878, has 234 seats.UAL, of course, will make extra money by overbooking. However, they must worry about the FAA fines, and they must keep a safety margin, say, that there is at least 95% probability that they can accommodate all those who show up for the Boring 878 flight.How many seats can they sell in this case?