Suppose you have two departments and have daily data on complaints and number of products they oversee for the departments over two years. In the second year, you increased the number of products under the scope of department #2 by 10. To estimate the effect of this increase in the number of products, you estimate the following regression: Complaintsit = ? + ?1 × Department #2it + ?2 × Year2it + ?3 × Department #2it × Year2it + Uit. In this regression, what is the "diff-in-diff"?
A. ? + ?3
B. ?3
C. ? + ?1
D. ?1 + ?3
Answer: B
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1.says that the membrane lipids are floating in protein. 2.says that the membrane proteins are floating in lipid. 3.says the membrane lipids are floating in sugars. 4.says that membrane proteins are floating in DNA. 5.says that there are no sterols in the membrane.
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