Answers CR02201A Probability and Statistics Multiple SamplesQuestion 2

2

QuizMultiple Choice

Multiple Samples

Question 2 • CR02201A Probability and Statistics

Ducks Unlimited helps sample duck species across the United States. Samples from one particular location for the last two years are shown below. Which duck population seemed to hold steady?Duck Pond Samples20102011Mallard58Mallard73Wood Duck11Wood Duck12Green Wing Teal19Green Wing Teal34American Widgeon24American Widgeon29

Answer

A

American Widgeon

B

Green Wing Teal

C

Mallard

D

Wood Duck

Explanation

Compare each species’ samples from 2010 to 2011. Wood Ducks changed from 11 to 12, an increase of just 1; the other species increased by 5 or more. So the Wood Duck population seemed to hold steady.

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