"Do Athletes Who Include Imaging Their Success as Part of Their

Multiple Choice

"Do athletes who include imaging their success as part of their practice do better than athletes who do not include imaging?" The null hypothesis is

A) athletes who image do better than athletes who do not image.
B) athletes who image do worse than athletes who do not image.
C) athletes who image do not differ from athletes who do not image.
D) the population mean of athletes who image is greater than the population mean of athletes who do not image.