There is a new treatment to help smokers stop smoking. In an experiment, 90% of 300 smokers quit after 15 days of treatment. Which of the following is the 95% confidence interval?​

(a) what was the opportunity cost of non-gm food for many buyers before 2008? (b) why did they prefer the alternative? (c) what was the opportunity cost in 2008? (d) why did it change?

The green revolution is a scientific breakthrough that improved seeds for basic crops. how did the green revolution impact the supply of basic crops such as wheat and corn? the supply of wheat and corn increased. there was no impact on the supply of basic crops. the supply of basic crops did not change, but the quantity supplied of basic crops increased. the supply of wheat and corn decreased.

Which of the following is true of the strategy of planned and unplanned change in global marketing? a) cultural congruence involves deliberately changing certain aspects of culture to meet marketing goals. b) all marketing efforts require planned or unplanned change in order to be accepted. c) planned change involves marketing products similar to the ones already on the market. d) the first step in bringing about planned change in a society is to remove obstacles for acceptance of a product. e) social planners gained the acceptance of protein-rich diets among the peoples of underdeveloped societies using the strategy of planned change.