Perform the test, and report a p-value (two-tailed)? Ornithology Data are available from four source populations of

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Perform the test, and report a p-value (two-tailed)?


Ornithology

Data are available from four source populations of stonechat birds:

(1) An African group that resides year-round in equatorial Africa

(2) A European group from Austria that migrates a comparatively short distance to Northern Africa

(3) An Irish group that winters along the coast of Britain and Ireland

(4) A Siberian group from Kazakhstan that migrates a long distance to India, China, and Northern Africa.

The data for this problem were supplied by Maude Baldwin, a graduate student in the Biology Department at Harvard University. The data in Table 12.48 on wing length were presented from male birds of four different populations. 12.82 What test can be used to compare the mean wing length in the four groups? 

Table 12.48: Wing length (cm) from males of four different populations of stonechat birds

 sd Mean African European Irish 72.73 66.26 68.45 22 1.42 1.33 43 30 1.15 1.22 12 Siberian 69.11 Overall 68.52 107


Suppose we assume within each subspecies that wing length is normally distributed and that the underlying standard deviation is the same.

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