Use data ezanders. dta to estimate the following regressions model: log(uclms) =β0+β1·t+d1feb+d2mar+· · ·+d11dec+u(a) report the regression results.(b) add enterprize zone (ez) dummy variable (ez) to the above regression andestimate the first order autocorrelation coefficient aset=γ0+γ1et-1+t, whereetis the ols residual from the regression. what implications does thishave for ols? (c) if you want to use ols but also want to obtain a valid standard error for theez coefficient, what would you do?

The hawthorne works was a large western electric factory with 45,000 employees. during the 1920s and 1930s, hawthorne works was the site of some well-known industrial studies. in one of the studies, researchers investigated the impact of different working conditions on worker productivity. prior to the start of the study, researchers secretly measured workers' productivity for several weeks. then researchers chose two workers, who then chose their own teams. the teams were separated from the general workforce and completed their work in different experiment rooms where the researchers could observe them more easily. over a 5-year period researchers manipulated the structure of the workday for each team (number and duration of breaks and number of hours per shift). for each of these changes in working conditions, the researchers measured the effect on productivity. for some conditions, such as frequent short breaks, workers rebelled by intentionally decreasing productivity. why did the researchers secretly measure the workers' productivity before creating the two treatment groups? a, to create similar treatment groups so that a cause-and-effect relationship could be establishedb, to draw conclusions about the productivity of all workers in the plant based on the test groupsc, to directly control for confounding variablesd, to provide a baseline for measuring worker productivity

Franklin painting company is considering whether to purchase a new spray paint machine that costs $4,800. the machine is expected to save labor, increasing net income by $720 per year. the effective life of the machine is 15 years according to the manufacturer’s estimate. required determine the unadjusted rate of return based on the average cost of the investment.

Chance company had two operating divisions, one manufacturing farm equipment and the other office supplies. both divisions are considered separate components as defined by generally accepted accounting principles. the farm equipment component had been unprofitable, and on september 1, 2018, the company adopted a plan to sell the assets of the division. the actual sale was completed on december 15, 2018, at a price of $600,000. the book value of the division’s assets was $1,000,000, resulting in a before-tax loss of $400,000 on the sale. the division incurred a before-tax operating loss from operations of $130,000 from the beginning of the year through december 15. the income tax rate is 40%. chance’s after-tax income from its continuing operations is $350,000. required: prepare an income statement for 2018 beginning with income from continuing operations. include appropriate eps disclosures assuming that 100,000 shares of common stock were outstanding throughout the year. (amounts to be deducted should be indicated with a minus sign. round eps answers to 2 decimal places.)