Mathematics, 07.10.2020 23:01 Mimix2k
A researcher plans to study the causal effect of police on crime, using data from a random sample of U. S. counties. He plans to regress the county’s crime rate on the (per capita) size of the county’s police force. (a) Explain why this regression is likely to suffer from omitted variable bias. Which variables would you add to the regression to control for important omitted variables? (b) Use your answer to (a) and the expression for omitted variable bias on slide 5 of the slides on Chapter 6 (it is also Equation (6.1) in SW) to determine whether the regression will likely overor underestimate the effect of police on the crime rate. That is, do you think that βb 1 > β1 or βb 1 < β1 ?
Answers: 1
Mathematics, 21.06.2019 18:40
Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.
Answers: 1
Mathematics, 21.06.2019 20:00
What are the domain and range of the function f(x)=2^x+1
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Mathematics, 21.06.2019 21:40
The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?
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Mathematics, 21.06.2019 22:00
Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4
Answers: 2
A researcher plans to study the causal effect of police on crime, using data from a random sample of...
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