On one busy holiday weekend, a national airline has many requests for a standby flights at half of the usual one way air fare. however past experience has shown that these passengers have only about 1 in 5 chance of getting on the standby flight. when they fail to get on a flight as a standby, there only other choice is to fly first class on the next flight out. suppose that the usual one way air fare to a certain city is $285 and the cost of flying first class is $573. should a passenter who wishes to fly to this city opt to fly as a standby?