Question 1
An experiment that consists ofn identical, independent trials, each with only two mutually exclusive outcomes that have constant probabilities, may be modeled with:
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a hypergeometric random variable.
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a geometric random variable.
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a Poisson random variable.
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a binomial random variable.
Question 2
At a particular spot in a local lake, there are, on average, 25 fish per cubic meter. If we assume that the probability of finding a fish is the same in this region over all cubic meters of water and that the number of fish in any one cubic meter in this region is independent of the number in any other cubic meter, what is the probability that we will find exactly 12 fish in the cubic meter in which we are fishing?
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0.0017
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0.0004
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0.4800
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0.0480
Biomagnification in a Lake Ontario food chain.
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Average national IQs according to IQ and Global Inequality