In estimating the effect of a difference in earnings for ivy league graduates, non-ivy league college graduates, and non-college graduates the following regression is run: Earningsi = ?0 + ?1IvyLeaguei + ?2NonIvyCollegeGraduatei + Ui. What does the coefficient ?1 represent?
A. The average earnings of an Ivy league graduate.
B. The average earnings of an ivy league graduate conditional on graduating from any college.
C. The additional increase (decrease) in earnings from going from no college degree to an Ivy league degree.
D. The additional increase (decrease) in earnings from going from graduating college to graduating from an Ivy league school.
Answer: C
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The metabolic diversity of photosynthetic bacteria stems from different
A) bacteriochlorophylls and pigments they contain. B) chlorophylls they can have and organic compounds they can produce. C) light-harvesting complexes, electron donors, and organic compounds they produce. D) unrelated taxa capable of photosynthesis.
When a population shows a range of nonincremental differences in some trait, they are showing
a. continuous variation. b. pleiotropy. c. linear variation. d. exponential variation. e. skewed variation.
The graph in the accompanying figure would best be described as:
a. being characteristic of exponential growth.
b. being characteristic of arithmetic growth.
c. an S-shaped curve.
d. a J-shaped curve.
e. being a J-shaped curve characteristic of exponential growth
Why should GM foods be considered on a case-by-case basis instead of making general statements about all GM foods?
What will be an ideal response?