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Problem: To estimate the general population of a new species in the wild, scientists have set out to capture and tag the animals. Of all the animals they have caught so far, around 40% of the animals caught were already tagged. On the last day of tagging they captured 7 animals. Using this information, answer the questions below.
For full marks your answer should be accurate to at least three decimal places.
Question 1: How many of the animals captured would you expect to have already been tagged?
Expected number:
Question 2: What is the standard deviation of this distribution?
Standard Deviation:
Question 3: What is the probability that the number of animals previously tagged is 4?
Probability:
Question 4: What is the probability that the number of animals previously tagged equals 4 or 5?
Question 5: What is the probability that the number of animals previously tagged is less than or equal to 2?
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