Minerals ltd. contracts to provide several manufacturers with tin. when a cartel of tin-producing countries suddenly embargoes future shipments of tin to minerals so that it cannot fulfill its contracts, the distributor
a. can substitute some other material for the tin.
b. is excused from the performance of its contracts.
c. is liable for breach of contract.
d. must still supply the tin needs of its customers.

Ajustification for job training programs is that they improve worker productivity. suppose that you are asked to evaluate whether more job training makes workers more productive. however, rather than having data on individual workers, you have access to data on manufacturing firms in ohio. in particu- lar, for each firm, you have information on hours of job training per worker (training) and number of nondefective items produced per worker hour (output). (i) carefully state the ceteris paribus thought experiment underlying this policy question. (ii) does it seem likely that a firm’s decision to train its workers will be independent of worker characteristics? what are some of those measurable and unmeasurable worker characteristics? (iii) name a factor other than worker characteristics that can affect worker productivity. (iv) if you find a positive correlation between output and training, would you have convincingly established that job training makes workers more productive? explain.

As manager of kids skids, meghan wants to develop her relationship management skills. in order to do this, she learns how to

Hundreds of a bank's customers have called the customer service call center to complain that they are receiving text messages on their phone telling them to access a website and enter personal information to resolve an issue with their account. what action should the bank take?