Westonci.ca is your go-to source for answers, with a community ready to provide accurate and timely information. Connect with a community of experts ready to help you find solutions to your questions quickly and accurately. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

a parking lot has two entrances. cars arrive at entrance i according to a poisson distribution at an average of three per hour and at entrance ii according to a poisson distribution at an average of four per hour. what is the probability that a total of three cars will arrive at the parking lot in a given hour? (assume that the numbers of cars arriving at the two entrances are independent.)