Russell's study compared gpa of those students who volunteered for academic study skills training and those who did not elect to take the training. he found that those who had the training also had higher gpa. with which validity threat should russell be most concerned?

Suppose that a worker in caninia can produce either 2 blankets or 8 meals per day, and a worker in felinia can produce either 5 blankets or 1 meal per day. each nation has 10 workers. for many years, the two countries traded, each completely specializing according to their respective comparative advantages. now war has broken out between them and all trade has stopped. without trade, caninia produces and consumes 10 blankets and 40 meals per day and felinia produces and consumes 25 blankets and 5 meals per day. the war has caused the combined daily output of the two countries to decline by

Which of the following is an example of a positive externality? a. promoting generic drugs would benefit people. b. a lower inflation rate would benefit most consumers. c. compulsory flu shots for all students prevents the spread of illness in the general public. d. singapore has adopted a comprehensive savings plan for all workers known as the central provident fund.

Slimwood corporation made sales of $ 725 million during 2018. of this amount, slimwood collected cash for $ 670 million. the company's cost of goods sold was $ 300 million, and all other expenses for the year totaled $ 400 million. also during 2018, slimwood paid $ 420 million for its inventory and $ 285 million for everything else. beginning cash was $ 110 million. carter's top management is interviewing you for a job and they ask two questions: (a) how much was carter's net income for 2018? (b) how much was carter's cash balance at the end of 2016? you will get the job only if you answer both questions correctly.