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Biology and Environmental Science During the first few weeks of January every year, biologists associated with the U.S. Fish and Wildlife Service and the Maryland Department of Natural Resources physically count ducks, geese, and swans near the Chesapeake Bay.

In 2013 these scientists counted 175,500 ducks, of which 33,100 were Mallards. Find a point estimate for the proportion of Mallards that were observed during the 2013 winter duck count.

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