Historical Data for a Local Steel Manufacturing Company Shows That

Multiple Choice

Historical data for a local steel manufacturing company shows 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 Poisson distribution. What is the probability that there will be a total of 7 defects on four standard sheets of steel?

A) .8750
B) .1221
C) .0573
D) .1396