Which statement about ethnic groups and religious groups is correct? A.
People who share an ethnicity never follow the same religion.

B.
People who share an ethnicity always follow the same religion.

C.
A person's religion is determined by that person's ethnicity.

D.
A person's religion does not determine that person's ethnicity.

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a. static group comparisonb. pretest-posttest control group designc. control-group-time-series designd. nonrandomized control-group pretest-posttest design