Trainers Need to Estimate the Level of Fat in Athletes

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 followup test. The main
Purpose of the larger sample is to…

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