What is the effect of an increase in the desired confidence level on the number of observations necessary in a time study?
A)increases
B)decreases
C)unaffected
D)may increase or decrease, depending on the sample standard deviation
E)impossible to say without additional information

Question

Quizplus · Accepted Answer

Increasing the desired confidence level in a time study typically requires a larger sample size to ensure that the confidence interval accurately reflects the population parameter. This is because a higher confidence level means you want to be more certain about your estimates, which necessitates more data to reduce the margin of error.

What Is the Effect of an Increase in the Desired