Why is it the case that an instrumental variable is not found directly in the determining function?
A. If an instrument is exogenous, then it has an effect on the outcome just not a statistically significant one.
B. If an instrument is relevant, then it has an effect on the outcome just not a statistically significant one.
C. If an instrument is exogenous, then it has no effect on the outcome beyond those already in the determining function.
D. If an instrument is relevant, then it has no effect on the outcome beyond those already in the determining function.
Answer: C
You might also like to view...
Allergens induce ____ cells to secrete an overabundance of ____ antibodies
a. CD4+ T; IgA b. B; IgE c. dendritic; IgG d. CD8+ T; IgE e. B; IgG
Neurotransmitters are released into the _______ while hormones are released into the _______.
a. synaptic cleft; brain b. bloodstream; synaptic cleft c. synaptic cleft; bloodstream d. None of the above
Which of these is NOT a legal or physical disadvantage of current reproductive technologies?
A) Babies born as a result of In Vitro Fertilization have significantly higher rates of autism. B) Surgery is necessary to remove eggs for In Vitro Fertilization. C) Hormone injections to promote ovulation may cause the birth of multiples. D) It is sometimes unclear how current law applies to babies born through current reproductive technologies.
Which animal is likely to have the circulatory pattern shown in the figure?
A. Mammal B. Fish C. Frog D. Bird E. Crocodile