A Student Is Interested in Whether Students Who Study with Others

Essay

A student is interested in whether students who study with others devote as much attention to their studies as do students who study alone. He believes those who study alone devote more attention to their studies. He randomly assigns subjects to either group or individual study conditions and has them read and study the same passage of information for the same amount of time. Subjects are then all given the same 10-item test on the material. Their scores appear below. Scores on the test represent interval/ratio data and are normally distributed.


-Calculate the 95% CI.