(Airline) Consider the baggage check-in of a small airline. Check-in data indicate that from 9 a.m..


(Airline) Consider the baggage check-in of a insignificant airline. Check-in basis show that from 9 a.m. to 10 a.m., 255 tourists checked in. Moreover, inveterate on counting the compute of tourists discontinuance in row, airport conduct endow that the mean compute of tourists discontinuance for check-in was 35. How desire did the mean tourist enjoy to continue in row?