Answer:
2.24
Step-by-step explanation:
The probability formula using a Poisson distribution is:

λ = 90 / 18 = 5 average goals per interval (interval = a game)
So if for example you were interested in the probability of making 2 goals in a game
k = 2

This was just an example,
The standard deviation is 

Answer:
13
Step-by-step explanation:
my brain
Answer:
-5/4
Step-by-step explanation:
change in y/change in x
Answer:
B. because A and B cannot occur at the same time.
Step-by-step explanation:
If two events are mutually exclusive, why is ? Choose the correct answer below.
A. because A and B each have the same probability.
B. because A and B cannot occur at the same time.
C. because A and B are independent.
D. because A and B are complements of each other.