Provide an appropriate response 25 If selecting samples of s

Provide an appropriate response. 25) If selecting samples of size n =10 (mm a population with a known mean and standard deviation, what requirement, if any, must be satisfied in order to assume that the distribution of the sample means is a normal distribution? A) The population must have a normal distribution. B) The population must have a mean of 1. C) The population must have a standard deviation of 1. D) None; the distribution of sample means will be approximately normal.

Solution

Answer: D

Since we know the standard deviatoin, the sample mean will be approximated to the normal distribution.