In a certain geographic location tornados occur on average twice every nine months. What are the...
In a certain geographic location tornados occur on average twice every nine months. What are the odds that exactly three tornados occur in a nine month period?
a. 67%
b. 18%
c. 82%
Homework Answers
Let X denotes the number of tornados occur in a randomly selected nine month period.
X ~ Poisson(2)
The probability mass function of X is
Now,
The probability that exactly three tornados occur in a nine month period
ans-> b) 18%
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