Trainers Need to Estimate the Level of Fat in Athletes

Multiple Choice

Trainers need to estimate the level of fat in athletes to ensure good health. Initial tests were based on a small sample but now the trainers double the sample size for a follow-up test. The main purpose of the larger sample is to…

A) reduce confounding due to other variables.
B) reduce non-response bias.
C) reduce response bias.
D) decrease the standard deviation of the sampling model.
E) decrease the variability in the population.