Solution :
Given that ,
mean = = 6.9
Using Poisson probability formula,
P(X = x) = (e- * x ) / x!
P(X = 4) = (e-6.9 * 6.94) / 4! = 0.0952
Probability = 0.0952
The auto parts department of an automotive dealership sends out a mean of 6.9 special orders...
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