Which of the following is a key difference between collaboration and cooperation?
a. people should work together to cooperate, whereas they need not work together to collaborate.
b. unlike cooperation, collaboration occurs when a job has to be accomplished.
c. cooperation requires people to have a common goal, whereas collaboration occurs even without a common goal.
d. unlike cooperation, collaboration gives importance to iteration and feedback.

Torino company has 1,300 shares of $50 par value, 6.0% cumulative and nonparticipating preferred stock and 13,000 shares of $10 par value common stock outstanding. the company paid total cash dividends of $3,500 in its first year of operation. the cash dividend that must be paid to preferred stockholders in the second year before any dividend is paid to common stockholders is:

Who is not spending wisely? erika goes shopping and saves her receipts. she totals how much she spent and writes it down. mia needs to buy a new pair of shoes because she joined the soccer team. she looks at newspaper ads to find the best price. lauren has been thinking about getting a puppy for a long time. she walks by the pet store at the mall and decides to get a puppy. erin makes a purchase online using a credit card. she knows that she can pay the entire bill when it arrives.

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