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As part of the foraging behavior assessment described in the previous problem, investigators also measured the bill depths of the male and female Downy Woodpeckers. Summary statistics for these measures are given in the table below: An initial analysis of the data revealed that it was reasonable to assume the bill depths for both sexes are approximately normal.
a) Construct a 95% confidence interval for the difference in bill depths of the males and females.
b) Do the data indicate that the bill depths differ? Justify your answer statistically.
Biology
The scientific study of life and living organisms, including their structure, function, growth, origin, evolution, and distribution.
American Psychological Association
A professional organization representing psychology in the United States, promoting research, education, and clinical practice in the field.
William James
An American philosopher and psychologist, often referred to as the father of American psychology, known for his contributions to functionalism.
Margaret Floy Washburn
A prominent early American psychologist known for her work in animal behavior and motor theory development.
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