A blood clot consists of fibrin, platelets, and red blood cells.
a. true
b. false
Answer: a. true
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What are lacunae?
Certain human cancer cells may demonstrate which of the following?
a. deletion b. inversion c. translocation d. duplication e. crossing over
What is the name of the proteins that make up the nuclear lamina and of what protein superfamily are they a member?
a) keratin, intermediate filaments b) lamins, laminins c) keratin, laminins d) lamins, intermediate filaments e) actin, microfilaments
Consider the regression of Salesi = ?0 + ?1Pricei + ?2Promoi + ?3Weekendi + Ui, where Promoi and Weekendi are binary variables for if the particular observation was on promo (1 if promo, 0 otherwise), or comes from a weekend day (1 if weekend day, 0 otherwise). A member of your team informs you that all the promotions run for the products in your population were run on weekends. What identification challenge might you worry about? What identification challenge might you worry about?
A. Perfect multicollinearity B. Heteroscedasticity C. Imperfect multicollinearity D. Endogeneity