Birds in the trees Researchers studied the behavior of
Chapter 10, Problem 10.29(choose chapter or problem)
Birds in the trees Researchers studied the behavior of birds that were searching for seeds and insects in an Oregon forest. In this forest, 54% of the trees were Douglas fi rs, 40% were ponderosa pines, and 6% were other types of trees. Th e researchers made 156 observations of red-breasted nuthatches: 70 were seen in Douglas fi rs, 79 in ponderosa pines, and 7 in other types of trees.9 Do these data suggest that nuthatches prefer particular types of trees when theyre searching for seeds and insects? Carry out a chi-square goodness of fi t test to help answer this question.
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