drew wants to learn whether playing sport in school affects teenage girls self esteem in drew’s study playing sports is the

Doctors recommend that both men and women take an aspirin every day to prevent heart attacks. however, the sample in the research study only contained men. the problem with doctors making this aspirin recommendation reflects a bias.

What were some of the things done to the colonists by king george iii

Which technological breakthrough of the 1950s revolutionized the way that americans kept up with news and world events? a) radio b) internet c) television d) motion pictures