Stat 400 Hw5 (Practise)1. A toll bridge charges $2 for passenger cars and $4.5 for other vehicles. Supposethat 80% of all cars passing from this bridge are passenger cars. If in a day40 vehicles cross the bridge, compute the expected toll revenue from all thesevehicles. You should use terminology of random variables to justify your steps. Hint: Let X be the number of passenger cars, then the toll revenue is a linearfunction of X...