In estimating a regression model with an instrumental variable typically one of two methods is used to estimate the mode. The two methods are:
A. fixed effects regression and panel data methods.
B. two-stage least squares and generalized method of moments.
C. two-stage least squares and fixed effects regression.
D. two-stage least squares and within estimator.
Answer: B
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Dual-energy X-ray absorptiometry (DXA) is used to assess:
A) energy expenditure. B) genetic predisposition for obesity. C) body composition. D) body mass index (BMI)
The trait of connected earlobes is considered a
a. beneficial trait. b. harmful trait. c. neutral trait. d. dominant trait. e. significant trait.
The buffering effect of the balance between carbon dioxide, bicarbonate, and carbonate is stronger in freshwater than it is in the marine environment.
Answer the following statement true (T) or false (F)
Which of the following statements about ATP is true?
A) It contains five phosphate groups. B) Extremely stable bonds link the second and third phosphate groups. C) It contains the sugar glucose. D) It releases energy when one phosphate group leaves ATP.