what do operational testers evaluate to determine the degree to which a system is usable in its intended environment, e. g., reliable, supportalbe, maintainable and transportable?

Ateam of engineers has decided to design a new shoe for people suffering from a painful foot condition. what should the engineers do during the planning stage of their project? a. look at the trial's results to see how the design can be improved. b. build a variety of shoe models. c. have patients wear the new shoe in an experimental trial to see if symptoms improve. d. estimate how much potential consumers would be willing to pay for this new shoe.

Molander corporation is a distributor of a sun umbrella used at resort hotels. data concerning the next month’s budget appear below: selling price per unit $ 29 variable expense per unit $ 14 fixed expense per month $ 12,450 unit sales per month 980 required: 1. what is the company’s margin of safety? (do not round intermediate calculations.) 2. what is the company’s margin of safety as a percentage of its sales? (round your percentage answer to 2 decimal places (i.e. 0.1234 should be entered as 12.

Suppose that xtel currently is selling at $40 per share. you buy 500 shares using $15,000 of your own money, borrowing the remainder of the purchase price from your broker. the rate on the margin loan is 8%. a. what is the percentage increase in the net worth of your brokerage account if the price of xtel immediately changes to (a) $44; (b) $40; (c) $36? (leave no cells blank - be certain to enter "0" wherever required. negative values should be indicated by a minus sign. round your answers to 2 decimal places.) b. if the maintenance margin is 25%, how low can xtel’s price fall before you get a margin call? (round your answer to 2 decimal places.) c. how would your answer to requirement 2 would change if you had financed the initial purchase with only $10,000 of your own money? (round your answer to 2 decimal places.) d. what is the rate of return on your margined position (assuming again that you invest $15,000 of your own money) if xtel is selling after one year at (a) $44; (b) $40; (c) $36? (negative values should be indicated by a minus sign. round your answers to 2 decimal places.) e. continue to assume that a year has passed. how low can xtel’s price fall before you get a margin call? (round your answer to 2 decimal places.)