Prove that, in a vickrey (second-price sealed-bid) auction, for any false bid bi by any single bidder (that is, if vi is the bidder's private value for the item, then bi≠vi), there exists a vector b−i of bids by all other bidders such that the false bid gives strictly worse utility than bidding the true valuation, that is, ui(bi, b−i)

You are president of a large corporation. at a typical monthly meeting, each of your vice presidents gives standard area reports. in the past, these reports have been good, and the vps seem satisfied about their work. based on situational approach to leadership, which leadership style should you exhibit at the next meeting?

You have recently been made a department head of the new regional office. in getting to know your departmental staff, you have noticed that one of your inexperienced employees is not following through on assigned tasks. she is enthused about her new job and wants to get ahead in the organization. which alternative represents the most effective leadership style: a. discuss the lack of follow-through with her and explore thealternative ways this problem can be solved. b. specify what she must do to complete the tasks but incorporate any suggestions she may have. c. define the steps necessary for her to complete the assigned tasks and monitor her performance frequently. d. let her know about the lack of follow-through and give hermore time to improve her performance.

If a product goes up in price, and the demand for it drops, that product's demand is a. elastic b. inelastic c. stable d. fixed select the best answer from the choices provided