Does the Environment Affect Bird Weight? Researchers Measured the Weight

Multiple Choice

Does the environment affect bird weight? Researchers measured the weight (in grams) of male and female adult finches that were either raised in an aviary or caught in the wild. This observational study does not have a balanced design, particularly because finches caught in the wild were more difficult to obtain. A total of 52 finches were studied. A partial ANOVA table is provided below, along with an interaction plot displaying the group means.
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$$\begin{array}{l}\begin{array} { l r r r } \text { Factor } & \text { Type } & \text { Levels } & \text { Values } \\\text { malefemale } & \text { fixed } & 2 & f , m \\\text { origin } & \text { fixed } & 2 & \text { aviary, wild }\end{array}\\\\\text { Analysis of Variance for bird weight }\\\\\begin{array} { l r r r r r } \text { Source } & \text { DF } & \text { SS } & \text { MS } & \text { F } & \text { P } \\\text { Malefemale } & 1 & 10.844 & 10.844 & & \\\text { origin } & 1 & 19.607 & 19.607 & & \\\text { interaction } & 1 & 0.340 & 0.340 & & \\\text { Error } & 48 & 125.140 & 2.607 & &\end{array}\end{array}$$ S = 1.61465 R-Sq = 23.88% R-Sq(adj) = 19.12%
(Note: If you are using Table F rather than technology, select the nearest degrees of freedom in the table, not necessarily the most conservative value.)
What is the P-value for the main effect due to the birds' sex?

A) Greater than 0.10
B) Between 0.05 and 0.10
C) Between 0.01 and 0.05
D) Less than 0.01