Explain why some people who are applying for a job at a bank ...

[kshipps]

Explain why some people who are applying for a job at a bank dress up, arrive early, and have their paperwork neatly completed for the job interview.
 
  What will be an ideal response?

Question 2

How can a warranty at the seller's expense signal that a product is of high quality?
 
  What will be an ideal response?

[Kimmy]

Answer to Question 1

They are trying to eliminate adverse selection. These people are trying to signal that they would be a high-quality worker for the position at the bank.

Answer to Question 2

If the product is of low quality, the warranty would be very costly to the seller since a low-quality product would need more repairs than a high-quality product.