Discuss the usability, validity and reliability of a research instrument in your own words. What do they mean and what makes each different from the other

Which of the following situations best demonstrates the principle of separation of powers in the u.s. government? a. the president can veto laws passed by the legislature. b. the courts must approve constitutional amendments. c. states create their own educational policies. d. members of the legislature are elected by voters.

Based on what you read in the fact sheet, identify the type of customer the company is hoping to reach. super-phonic systems wants to sell phones to customers who:

According to healthy people 2020, health determinants are embedded in the broad range of personal, social, physical, economic, and factors that determine the health status of individuals and populations.