Which one of the statements is most likely to be included in an exam question ab

Question

Which one of the statements is most likely to be included in an exam question about the Poisson probability distribution?

A. A sports car dealer surcharges from 5% to 7% for the most popular colors, such as red and silver.

B. Ornithologists classify bird species as either capable of flight, or flightless. Penguins, kiwis, rheas, ostriches, emus, and cassowaries are all flightless, but no one is sure what percentage of all birds these represent.

C. The later at night it gets, the greater the probability of your being involved in an alcohol-related auto accident.

D. Approximately 10% of all Christmas presents bought in stores are returned by the recipients.

E. On Admiralty Island in Glacier Bay National Park, the population density for brown bears is approximately one bear per square mile.

Explanation / Answer

OPTION E: On Admiralty Island in Glacier Bay National Park, the population density for brown bears is approximately one bear per square mile.

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We know so because a Poisson distribution has a fixed mean number of successes. Here, there is a mean of 1 bear (success) per square mile.

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