Which federal regulation or law governs how researchers can obtain data about subjects' disciplinary status in school from academic records?

a. the no child left behind act.
b. the family educational rights and privacy act.
c. the protection of pupil rights amendment.

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

According to the aztec history, how did the aztecs know where to build their new city of tenochtitlan? why was this a good location?

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is: