Aresearcher hired by a department store wants to examine whether manipulating the room temperature to be hotter as opposed to cooler affects sales of air conditioners. the best method for answering this question would be

Which is not an example of a cyclical company? a) airlines b) hotel industry c) medical d) theme parks

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

Quick computing currently sells 12 million computer chips each year at a price of $19 per chip. it is about to introduce a new chip, and it forecasts annual sales of 22 million of these improved chips at a price of $24 each. however, demand for the old chip will decrease, and sales of the old chip are expected to fall to 6 million per year. the old chips cost $10 each to manufacture, and the new ones will cost $14 each. what is the proper cash flow to use to evaluate the present value of the introduction of the new chip? (enter your answer in millions.)