Answer with detailed explanation

Cars arrive to a refuse transfer station according to a Poisson process with constant rate lambda = 1 vehicle per minute. Each vehicle is equally likely to be a car (carrying a random amount of trash that is exponentially distributed with mean 70 kilograms) or a truck (carrying a random amount of trash that is gamma distributed with mean 1000 kilograms and standard deviation 400 kilograms). Provide a histogram for the total mass of trash received from 7am to 11am at the refuse transfer station