Numerade

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the core loss of a transformer is measured to be 600w at 120v and 50 hz if the transformer is operated at 60hz while keeping the voltage constant, what will be the new core loss if hysterisis loss accounts for 40% of it

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The Republic Bank of China is fat with cash from the increasing rate of Chinese exporting. As a smart player on the global stage, which strategic decision will the Republic Bank of China probably make on a daily basis?

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explain what a residual is. How is it calculated? Why is it important? 2. Explain how the assumptions for simple linear regression and multiple linear regression differ. 3. Suppose that you have the following variables: X, Y, and Z. Z is correlated w/ X, but Z is not correlated w/ Y. Explain what happens to your β1 estimate if you estimate the following model: Yi = β0 + β1Xi + β2Zi + ui 4. Suppose that your DGP is defined as follow: eY = Xβ · u Where Y is the outcome, X is a random variable and u is your disturbance term. a. Explain why you cannot estimate an OLS model in this case? b. Write down the OLS model that you want to estimate in this case. 5. Explain what a dummy variable trap is. How do we avoid it? 6. Explain what a heteroskedasticity is. What happens to your OLS estimate if you have heteroskedasticity. 7. List 3 ways and write down the steps to test for the presence of heteroskedasticity

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Question 45 Protein hormones are believed to exert their effects by activating certain ______ within a cell. A. other hormones B. enzymes C. RNA molecules D. genes

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Which of the following molecules is thought to have been absent from the primitive reducing atmosphere of early Earth? Select one: a. nitrogen (N2) b. methane (CH4) c. oxygen (O2) d. hydrogen (H2) e. water vapor (H2O)

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a 10 foot light pole cats a shadow that is 6 fret long. at the same time of day a nearby apartment building casts a shadow that is 36 feet long. how tall is the building

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true or false, National studies of mass media effects have unquestionably concluded that children are uniformly influenced by violent behavior depicted in many programs.

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Increased government spending on unemployment insurance during a recession is an example of If prices increase only in Canada, then: Multiple Choice Canadian goods become relatively more expensive than goods from other countries. Canadian goods become relatively less expensive than goods from other countries. the prices of foreign goods must rise. the prices of foreign goods must fall.

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consider when he is deciding whether to stay open an extra hour? equipment labor rent advertising

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Natural selection causes a species or population to change over time when three conditions are in place. What are those three conditions? Multiple answers:

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kyle f.