Multiple Choice
Tail-feather length in birds is sometimes a sexually dimorphic trait. That is, the trait differs substantially for males and for females. Researchers measured tail-feather length (the R1 central tail feather, in mm) in male and female long-tailed finches 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.
S = 9.21600 R-Sq = 47.32% R-Sq(adj) = 44.03% (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
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Tail-feather length in birds is sometimes
Q3: Tail-feather length in birds is sometimes
Q4: Does the environment affect bird weight?
Q5: Researchers are interested in the effects
Q6: A study examined the effect of
Q8: Does the environment affect bird weight?
Q9: Tail-feather length in birds is sometimes
Q10: Tail-feather length in birds is sometimes
Q11: A surgeon is interested in studying
Q12: Researchers are interested in the effects