. A researcher is interested in testing claims about the value of "common sense" over book learning. He tries to show that experience is the best teacher. He runs a regression using the variable wordsum as his dependent variable, which is sometimes used a proxy (or replacement/stand in) for IQ. This variable measures a respondents score on a vocabulary test from 1-10. He uses as independent variables education (number of years of education), mental health (number of days of poor mental health), and age of respondent (in years). Use the tables below (next page) to answer the following questions: A. Describe and interpret the model overall. How well does the model explain the dependent variable? Does the model significantly predict/explain the dependent variable? Explain. B. Describe and interpret all regression coefficients. C. He hypothesizes that as mental health increases, performance on the wordsum quiz will decline. Evaluate this research hypothesis, then his null hypothesis. D. Rank the independent variables in terms of the size of their impact on the dependent variable. Explain your ranking. Is the researcher right about experience (age) vs book learning (education)? E. Write out the regression model for this regression. Provide the predicted score on the wordsum quiz for someone who has 10 days of poor mental health, is 20 years of age, and has 17 years of education. Compare that to someone who has 10 days of poor mental health, is 50 years of age, and has 17 years of education. How would you compare the two?