If all possible samples of size n are drawn from an infinite population with a mean of 15 and a standard deviation of 5,then the standard error of the sample mean equals 1.0 for samples of size:
A)5
B)15
C)25
D)None of these choices.

Question

Quizplus · Accepted Answer

The standard error of the sample mean is calculated as the population standard deviation divided by the square root of the sample size (n). Given a standard deviation (σ) of 5 and a desired standard error of 1.0, the formula is: 1.0 = 5 / sqrt(n). Solving for n gives n = 25.

If All Possible Samples of Size N Are Drawn from an Infinite