Question 919389: Q3: Assume the number of episodes per year of otitis media, “a common disease of the middle ear in early childhood” is 1.6 episodes per year.
a. Find the probability of not getting any episodes of otitis media in the first year of life.
b. Find the probability of getting 2 or more episodes of otitis media in the first 2 years of life.
c. Find the probability of getting 2 episodes of otitis media in the first 6 months of life.
d. Find the Expected number and variance of episodes of otitis media in the first 1.5 years of life?
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website! Poisson Distribution: avg = 1.6/yr
a. P = poissonpdf(1.6,0)
b. P = 1 - posissoncdf(3.2,1)
c. P = poissonpdf(.8,2)
d. Exp(1.5yrs) = 2.4 , variance the same: 2.4
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