Selected sales and operating data for three divisions of different structural engineering firms are given as follows: division adivision bdivision c sales$ 15,900,000$ 28,720,000$ 20,720,000 average operating assets$ 3,180,000$ 7,180,000$ 5,180,000 net operating income$ 636,000$ 430,800$ 621,600 minimum required rate of return 7.00 %7.50 %12.00 % required: 1. compute the return on investment (roi) for each division using the formula stated in terms of margin and turnover. 2. compute the residual income (loss) for each division. 3. assume that each division is presented with an investment opportunity that would yield a 8% rate of return. a. if performance is being measured by roi, which division or divisions will probably accept or reject the opportunity? b. if performance is being measured by residual income, which division or divisions will probably accept or reject the opportunity?

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Reliability and validity reliability and validity are two important considerations that must be made with any type of data collection. reliability refers to the ability to consistently produce a given result. in the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways. unfortunately, being consistent in measurement does not necessarily mean that you have measured something correctly. to illustrate this concept, consider a kitchen scale that would be used to measure the weight of cereal that you eat in the morning. if the scale is not properly calibrated, it may consistently under- or overestimate the amount of cereal that’s being measured. while the scale is highly reliable in producing consistent results (e.g., the same amount of cereal poured onto the scale produces the same reading each time), those results are incorrect. this is where validity comes into play. validity refers to the extent to which a given instrument or tool accurately measures what it’s supposed to measure. while any valid measure is by necessity reliable, the reverse is not necessarily true. researchers strive to use instruments that are both highly reliable and valid.

Owns a machine that can produce two specialized products. production time for product tlx is two units per hour and for product mtv is four units per hour. the machine’s capacity is 2,100 hours per year. both products are sold to a single customer who has agreed to buy all of the company’s output up to a maximum of 3,570 units of product tlx and 1,610 units of product mtv. selling prices and variable costs per unit to produce the products follow. product tlx product mtv selling price per unit $ 11.50 $ 6.90 variable costs per unit 3.45 4.14 determine the company's most profitable sales mix and the contribution margin that results from that sales mix.