A sample of 25 observations has a mean of 8 and a standard deviation of 15. The standard error of the sample mean is closest to: A.1.60. B.3.00. C.3.06.
A sample of 25 observations has a mean of 8 and a standard deviation of 15. The standard error of the sample mean is closest to:
A、1.60.
B、3.00.
C、3.06.
发布时间：2025-09-13 01:31:33
