Trucks arrive at a distribution centre at a rate of 18 per hour following a Poisson distribution. On average a work crew can unload 6 trucks per hour. Crew cost is $400 per hour and the cost to have a truck waiting is $450 per hour. What is the average number of trucks waiting to be unloaded?

a) 1.233

b) 0.354

c) 0.468

d) 0.856

e) 0.227

NO IMAGE UPLOAD

SHOW CALCULATION