THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
As a purchasing agent,you are responsible for selecting sources of supply for manufactured components to use in your firm's production process.The salesman for a certain supplier has indicated that they can supply an electronic sub-assembly that has a defect rate of 1.1%-well below your current supplier's defect rate.You accept 100 sub-assemblies for evaluation,and find that there were four defects.
-Using the Poisson approximation to the binomial,how likely is it to get exactly four defects out of 100?