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christina choi

christina c.

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Why is making eye contact important during a presentation, and how does it help you engage with your audience? It makes you appear more confident and connected with the audience. It distracts from your message, as the audience focuses on your eyes. It allows you to avoid distractions in the room. It helps the audience focus on your slides instead of you.

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C. Henry Kempe coined what term, which he applied to cases of nonaccidental injury of children by their parents or guardians? Blended families Child abuse Fragile families Battered child syndrome

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Which pair of cartilages do not make direct contact with each other? Arytenoid & thyroid Corniculate & arytenoid Cricoid & arytenoid Thyroid & cricoid

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Part (a) Write the electric flux in terms of the charge Qenc enclosed by a closed surface passing through the sheet and fundamental constants.

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describe the specific hiera , rchical structure of one class of organic molecules (carbohydrates, proteins, lipids or nucleic acids)

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Kinesins and dyneins bind and hydrolyze... ? ATP ? CTP ? GTP ? UTP

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This type of sociology involves analyzing some aspect of sociology, with no goal other than gaining knowledge. Basic sociology None of the answers are correct Applied sociology Public sociology

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The output SPSS provides gives several key pieces of information, most of which are intuitively labeled. In this case, the "t" statistic provided is actually a z statistic due to your sample size. The main box to notice is labeled "sig (2-tailed)," which contains the exact p value, which is compared against your specified alpha. Value of .000 means your p value is very small. What do you conclude about your hypotheses? Is the conclusion the same at all levels of significance? f. Write a few sentences summarizing these results to your boss. Be sure to include mention of the type of test you used, what the result was, and the highest level at which the results were significant, if at all. Also write a sentence about the "so what" of your results: What does this mean for your intervention, and how large was the change produced?

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To become a member at a local nature preserve, applicants must pay an initiation fee of $150 plus their yearly membership dues. What is the slope of the line joining these points, and what does the slope represent?

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a) Consider the model $y_i = x_i\beta + \alpha + \epsilon_i$, $E[\epsilon_i|z_i] = 0$, where $z_i$ is a binary random variable. (i) Show that the slope coefficient $\beta$ can be identified as $\beta = \frac{E[y_i|z_i = 1] - E[y_i|z_i = 0]}{E[x_i|z_i = 1] - E[x_i|z_i = 0]}$. (1) Discuss whether you need any additional conditions to identify $\beta$ as (1). Interpret expression (1). (ii) Write down an analogue estimator of $\beta$ based on (1). Prove that the analogue estimator you suggested is in fact an IV estimator of the slope coefficient (make sure you clearly state what instrumental variable you use).

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