Some athletes use mental practice to try to improve performance. in one study, a group of people threw darts 24 times at a target. next, half of the group mentally practiced throwing 24 darts. finally, the entire group threw 24 more darts. what were the results?

In the kingdom of saudi arabia the government controls every aspect of oil production which makes up the majority of the country's economy. while other businesses are owned by individuals, the biggest segment of saudi arabia's economy is oil production. saudi arabia's economy would best be described as a) entirely market. b) almost entirely command. c) a mixture between just market and traditional. d) a mixed economy with large amounts of command.