Question 5 the number of barges passing under a bridge every hour is poisson distributed with a mean of 4 the barges come in 2 colors, red and blue 60% are blue. suppose you observe the barges over a period of 2 hours 1. (5 points) what is the probability that you observe exactly 9 barges over the period of 2 hours? 2 (5 points) given that you observed 9 barges over the period of 2 hours, what is the probability you saw 5 red and 4 blue barges? 40% are red and click save and submit to save and submit. click save all answers to save all answers.