Answer:
Therefore the required probability is 0.15.
Step-by-step explanation:
Poisson distribution:
The Poisson distribution is the number of an event is occur within a time period.
μ= The mean
x= event.
In Poisson distribution , the average rate event per time period is constant.
12% defective parts is produced by one of the machines of the time.
μ= (12%×7)= 0.84
x= the number of defective product =2
=0.15
Therefore the required probability is 0.15.