conduct a study comparing the number of injuries in football players who do a new, daily prescribed workout (Group A) to those who plan their own workout schedule and activities (Group B) as they always have done. He selects a random sample from the team and randomly assigns them to either Group A or Group B. He collects data on the incidence of injuries over a 6-month period. The hypothesis is, "The newly designed workout plan will result in fewer injuries than the self-designed workout plan among student football players. after the study finds out that several of the data collectors were not recording injuries unless the player had to go to the hospital while others recorded an injury regardless of the severity. This resulted in a problem with ____________. Group of answer choices internal consistency reliability confounding reliability test-retest reliability interrater reliability