Historical Data for a Local Steel Manufacturing Company Show That

Multiple Choice

Historical data for a local steel manufacturing company show that the average number of defects per standard sheet of steel is 2.In addition,the number of defects per unit is distributed according to a Poisson distribution.A batch has just been completed.What is the probability that the first three units manufactured in this batch will contain at least a total of 4 defects?

A) .8488
B) .7149
C) .1512
D) .2851