Application Exercise An Ecologist Hypothesizes That Birds With Shorter Wing Spans Use Wider Tree Branches The Ecologis 1 (144.64 KiB) Viewed 35 times
Application Exercise An Ecologist Hypothesizes That Birds With Shorter Wing Spans Use Wider Tree Branches The Ecologis 2 (151.34 KiB) Viewed 35 times
Application Exercise: An ecologist hypothesizes that birds with shorter wing spans use wider tree branches. The ecologist captured male birds, measured their wing span and other characteristics in millimeters, and then marked and released them. During the ensuing winter, the ecologist repeatedly observed the marked birds as they foraged for food on tree branches. He noted the branch diameter on each occasion, and calculated the average branch diameter for each bird in centimeters. The measurement data are below. What can the ecologist conclude with an α of 0.01?
a) Select and compute the appropriate statistic. b) Obtain/compute the appropriate values to make a decision about H0. Critical Value = ; Test Statistic = Decision: c) Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. Effect Size = ; Magnitude: d) Make an interpretation based on the results. There was a significant positive relationship between the wing span of the birds and branch diameter. There was a significant negative relationship between the wing span of the birds and branch diameter. There was no significant relationship between the wing span of the birds and branch diameter.
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