One of the factors that plays a significant role in determining the sample size needed to achieve a desired margin of error is the:
A)degree of variation in the population of values.
B)population mean.
C)sample mean.
D)degrees of freedom of the t-distribution.
E)all of the above.

Question

Quizplus · Accepted Answer

The degree of variation in the population (often measured as the population standard deviation) significantly influences the required sample size to achieve a specific margin of error. A higher variation requires a larger sample size to achieve the same margin of error. The population mean, sample mean, and degrees of freedom of the t-distribution do not directly determine the sample size needed for a desired margin of error.

One of the Factors That Plays a Significant Role in Determining