Which of the following scenarios might allow you to try and test the exogeneity condition of an instrumental variable empirically?
A. When you have two instrument variables and one endogenous variable.
B. When you know your instrument is relevant beforehand.
C. When you have two instrument variables and two endogenous variables.
D. When you can estimate the model using generalized method of moments.
Answer: A
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Bacterial cells typically have ____ while eukaryotic cells have ____
a. a single circular chromosome; many linear chromosomes b. several circular chromosomes; many linear chromosomes c. one linear chromosome; many circular chromosomes d. two circular chromosomes; numerous circular chromosomes depending on the species e. numerous circular chromosomes depending on the species; many linear chromosomes
Populations can be described in terms of their diversity and stability
Indicate whether the statement is true or false.
A protein that speeds up chemical reactions without being consumed in the process is called a(n) ________
Fill in the blank(s) with correct word
Which of the following steps in normal cellular respiration ends with formation of water?
A) fermentation B) glycolysis C) electron transport D) citric acid cycle