In words, why can utilizing an instrumental variable be an effective means toward identifying the causal effect of a treatment on an outcome?
A. It allows you to identify the causal effect of the treatment by using only variation in the treatment that isn't correlated with unobservables that affect the outcome.
B. It allows you to identify the causal effect of the treatment by using only variation in the treatment that is correlated with unobservables that affect the outcome.
C. It allows you to identify the causal effect of the treatment by controlling for unobservables that may crucially affect the outcome.
D. None of the answers is correct.
Answer: A
You might also like to view...
Which of the following groups is responsible for toxic red tides?
A. Foraminifera B. Diatoms C. Dinoflagellates D. Trypanosomes
What information can a DNA library provide?
1.It provides the sequence of all the genes in a given organism. 2.It can reveal minor differences in the number of tandem repeats in an individual. 3.It can be used to isolate a particular gene of interest using a labeled probe. 4.It can be used to analyze DNA from crime scenes.
Chargaff determined that DNA from any source contains about the same amount of guanine as
__________. a. uracil b. thymine c. adenine d. cytosine e. guanine
Molluscum contagiosum is transmitted by direct contact with skin lesions, fomites, and sexual activity.
Answer the following statement true (T) or false (F)