A Pilot Study Examining Weight Bearing Exercise and Bone Density

question 7

Multiple Choice

A pilot study examining weight bearing exercise and bone density detects an effect size of 0.8. You are planning the next study and know this means:

• A) you will find a clinically significant effect
• B) if you enroll a large sample you may be spending more than you need to
• C) if you have a small sample you will overestimate the effect
• D) if you have a small sample you will not have enough power to detect this effect size