The lag effect suggests that studying that is spaced out over a greater amount of time provides more of an advantage than spacing over shorter periods of time. Provide a brief description (1-2 sentences) of the lag effect.

Suppose you are interested in studying the effect of time spent in an SAT preparation course on actual SAT score. You propose the following regression of SAT score on hours spent in preparation for SAT and family income: Y = Bo + BiX + B2X2 + u Where Y = score on SAT X₁ = time spent in studying in an SAT preparation course X₂ = income of the student's family u = error term An important assumption in the regression model with two independent variables is that E(u|x₁,x₂)=0. Assume for simplicity that the only other relevant factor (contained in the error term) that affects Y is natural ability. That is, natural ability and u are essentially equivalent in your regression. In the context of your proposed regression, this assumption assumes which of the following?

Suppose researchers use observational data to study the effect of class size and teacher experience on student score. Which of the following is a confounding variable? Student score 0000 Family income Class size Teacher experience

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Solve the problem. Show work and do not use AI.

Parker Plaintiff is in a hurry and stops by a convenience store for a drink. The store is out of her favorite brand of soda, so Parker decides to go elsewhere. Before Parker can leave, she is stopped by a store employee that accuses her of shoplifting. The employee escorts Parker to a small room in the back of the store and tells Parker that if she attempts to leave the room, she will be arrested and sent to jail. Parker waits for over an hour before the manager tells her that she is free to go. What advice would you give Parker? Discuss the possible tort claim Parker might have against the store. Be sure to include the elements of the tort and relate those elements to the scenario. If Parker decides to pursue a claim against the store, should she consider a lawsuit, mediation, or arbitration? explain why your choice is the best option.

E CENGAGE MINDTAP Adaptive Test Prep (Ch 01) Question 3: In the graph below, as the relationship between the variables X and Y is: 40 30 C D 10 10 20 30 40 X value direct. O undefined. O independent. inverse. 20 Y value