4. When deciding if the distribution of a binomial random variable can be approximated using the Poisson Distribution, all of the following must be true EXCEPT A. n is large B. p is small C. np ≈ np (1 - p) D. We are modeling incidence of disease
4. When deciding if the distribution of a binomial random variable can be approximated using the Poisson Distribution, all of the following must be true EXCEPT
A. n is large
B. p is small
C. np ≈ np (1 - p)
D. We are modeling incidence of disease
5. If X denotes the number of events over T person years is Poisson-distributed with parameter µ, what is the unbiased estimate for λ?
A. X/T
B. X
C. ∑xi/n
D. T/X
6. The standardized morbidity ratio (SMR) assesses
A. The relative risk of the general population to the study population.
B. The relative risk of the study population relative to the general population.
C. The rate at which people in the study have an
D. The rate at which people in the general population have an event
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