Use the following to answer questions 4-8:
A garment manufacturer knows that the number of flaws per square yard in a particular type of cloth that he purchases varies with an average of 1.3 flaws per square yard. The count X of flaws per square yard can be modeled by a Poisson distribution.
.
Using the Poisson probability formula, the probability of getting exactly two flaws in a randomly selected yard of cloth is
a)
0.2169.
b)
0.3012.
c)
0.3614.
d)
0.6626.