Aresearcher wants to study the effect of regular exercise on cholesterol level. the researcher compares the cholesterol levels of 50 people who belong to a local gym and exercise there regularly with the cholesterol levels of 50 people from the same community who do not exercise regularly. the cholesterol levels of the gym members are substantially lower. the researcher can conclude that:

The following force measurements were taken during actual testing of the lever pictured. what is the ama of this lever?

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

What specific words do you hear in dr. king’s speech that are powerful