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...

The usa today reports that the average expenditure on valentine's day is $100.89. do male and female consumers differ in the amounts they spend? the average expenditure in a sample survey of 47 male consumers was $135.67, and the average expenditure in a sample survey of 38 female consumers was $68.64. based on past surveys, the standard deviation for male consumers is assumed to be $34, and the standard deviation for female consumers is assumed to be $17.