Assume that the poisson distribution applies and that the mean number of hurricanes in a certain area is 5.55.5 per year.
1 answer:
We are given
λ = mean = 5.5 hurricanes per year
and Poisson distribution applies.
P(k, λ ) = λ ^k * e^(- λ ) / k!
a) 4 hurricanes in a year
P(4,5.5)=5.5^(4)*e^(-5.5)/4!
=0.1558
b) In 55 years, the expected number of years with 4 hurricanes
= 55*0.1558 = 8.57, could be rounded to the nearest integer, 9.
c) Records show that in 55 years had 8 years had 4 hurricanes each year.
This compares very closely with the expected number 8.57.
You might be interested in
Answer:
Y= x/3 - 4/3
X= 4/3 + y
Step-by-step explanation:
Answer:
8c proved by me
Step-by-step explanation:
answer is 8c proved
mark me as brainlist
It is the very first option which is a
FALSE.......................
Answer:
16 and 125
Step-by-step explanation:
-2*-2 = 4
4*-2 = -8
-8*-2 = 16
5*5 = 25
25*5 = 125