John earns 88% on a test. He answers 44 questions correctly. How many questions are on the test?

Amanda works as an industrial designer

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

The prebisch–singer hypothesis concludes that: a. technology lowers the cost of manufactured products, so developing countries should see an increase in their terms of trade. b. developing countries experience a long-run decline in their terms of trade, as the demand for primary products in higher-income countries declines relative to their demand for manufactured goods. c. because of unfair trading practices, labor in developing countries is exploited. d. opec has been responsible for a slowdown in the world's standard of living.