M5-9 estimating cost behavior using least-squares regression refer to the tan-o-rama data in m5-7. suppose sherri performed a least-squares regression and obtained the following results: page 227 put sherri’s results into a linear equation format (y = a + bx) and explain what each component means. compare the regression results to those obtained in m5-7 and m5-8. which method is most accurate? why? lo 5-5 m5-10 calculating unit contribution margin and contribution margin ratio refer to the tan-o-rama regression output given in m5-9. suppose that the company charges $6 per tanning session. calculate the unit contribution margin and contribution margin ratio as well as the total contribution margin if the shop books 400 tanning sessions this month.

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.

In terms of the "great wheel of science", statistics are central to the research process (a) only between the hypothesis phase and the observation phase (b) only between the observation phase and the empirical generalization phase (c) only between the theory phase and the hypothesis phase (d) only between the empirical generalization phase and the theory phase

Acontinental polar air mass foms where