Suppose that total sales in an industry in a particular year are $800 million and sales by the top four sellers are $50 million, $40 million, $30 million, and $30 million, respectively. we can conclude that

Ajustification for job training programs is that they improve worker productivity. suppose that you are asked to evaluate whether more job training makes workers more productive. however, rather than having data on individual workers, you have access to data on manufacturing firms in ohio. in particu- lar, for each firm, you have information on hours of job training per worker (training) and number of nondefective items produced per worker hour (output). (i) carefully state the ceteris paribus thought experiment underlying this policy question. (ii) does it seem likely that a firm’s decision to train its workers will be independent of worker characteristics? what are some of those measurable and unmeasurable worker characteristics? (iii) name a factor other than worker characteristics that can affect worker productivity. (iv) if you find a positive correlation between output and training, would you have convincingly established that job training makes workers more productive? explain.

Ida sidha karya company is a family-owned company located on the island of bali in indonesia. the company produces a handcrafted balinese musical instrument called a gamelan that is similar to a xylophone. the gamelans are sold for $860. selected data for the company’s operations last year follow: units in beginning inventory 0 units produced 320 units sold 285 units in ending inventory 35 variable costs per unit: direct materials $ 135 direct labor $ 355 variable manufacturing overhead $ 30 variable selling and administrative $ 15 fixed costs: fixed manufacturing overhead $ 64,000 fixed selling and administrative $ 27,000 the absorption costing income statement prepared by the company’s accountant for last year appears below: sales $ 245,100 cost of goods sold 205,200 gross margin 39,900 selling and administrative expense 31,275 net operating income $ 8,625 required: 1. under absorption costing, how much fixed manufacturing overhead cost is included in the company's inventory at the end of last year? 2. prepare an income statement for last year using variable costing. what is the amount of the difference in net operating income between the two costing methods?

Using a cps-sample of 7,440 individuals, you estimate the following regression: = 20.91 - 2.61 x female where female is a binary variable that takes on the value of 1 for females and is 0 otherwise. the standard error on the coefficient on female is 0.25. the 95% confidence interval for the gender wage gap, or the amount that females earn less, is: a) [-3.10, -2.12] b) [18.30, 23.52] c) [-3.02, -2.20] d) [-1.96, -1.64]