Consider an infinite population with a mean of 160 and a standard deviation of 25.A random sample of size 64 is taken from this population.The standard deviation of the sample mean equals:
A)25
B)25/64
C)25/√64
D)None of these choices.

Question

Quizplus · Accepted Answer

The standard deviation of the sample mean is equal to the population standard deviation divided by the square root of the sample size. Therefore, the standard deviation of the sample mean is 25/√64, which simplifies to 25/8. So the answer is C).

Consider an Infinite Population with a Mean of 160 and a Standard