The article The Role of Niche Breadth, Resource Availability and Range Position on the Life History of
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a. Compute the least-squares line for predicting the flight period (y) from wingspan (x).
b. Compute 95% confidence intervals for β0 and β1.
c. Two butterflies differ in wingspan by 2 mm. By how much do you estimate that their flight periods will differ?
d. Can you conclude that species of butterflies with larger wingspans have shorter flight periods on average? Explain.
e. Can you conclude that the mean flight period for butterflies with a wingspan of 30 mm is less than 28 days?
f. A certain butterfly species has a wingspan of 28.5 mm. Find a 95% prediction interval for its flight period.
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