Answered

A student is interested in whether

students who study with music playing devote as much


attention to their studies as do students

who study under quiet conditions (he believes that

studying under quiet conditions leads

to better attention). He rando~ assigns participants



to either the music or no-music condition

and has them read and study the same passage

of information for the

same amount of time.



Subjects are given the same 10-item

test on the material. Their scores appear next. Scores on


the test represent interval-ratio

data and are normally_distributed.