In a Study of the Population Density of Bullfrogs in a Lake

question 182

Multiple Choice

In a study of the population density of bullfrogs in a lake, 25 frogs are captured and marked in the first sampling.Five days later, 30 frogs are captured, 10 of which have marks.Based on these results, the estimated number of bullfrogs in this population is

• A) 40.
• B) 55.
• C) 65.
• D) 75.
• E) 250.

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