The profit margin ratio is the only ratio that makes up ROE that can be negative (except in relatively rare cases). Describe how the interpretation of the Asset Turnover Ratio and the Financial Leverage Ratio change based on whether the Profit Margin Ratio is positive or negative.

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.

When the federal reserve buys and sells bonds to member banks, it is called a. monetary policy b. reserve ratio c. interest rate adjustment d. open market operations

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.