Level of confidence in sample size formulae is normally set at:
A)95 percent or 96 percent.
B)5 percent or 10 percent.
C)95 percent or 99 percent.
D)1 percent or 5 percent.
E)None of the above;level of confidence is determined by the formula.

Question

Quizplus · Accepted Answer

The level of confidence in sample size formulae is typically set at 95% or 99% to ensure a relatively high level of accuracy in the estimation process. Choosing a level of confidence below 95% would result in a higher risk of error, while choosing a level of confidence above 99% would require an excessively large sample size, resulting in higher costs and longer processing times. Therefore, the most commonly used levels of confidence are 95% and 99%.

Level of Confidence in Sample Size Formulae Is Normally Set