Question

A sample of 55 is selected from a known population of 270 elements. The population standard deviation is 10. What is the value of standard error of the mean?

Answer 1

The standard error of the mean is 1.34.

Step-by-step explanation:

The standard error of the mean is a measure of the accuracy with which the sample mean estimates the population mean. It is calculated by dividing the population standard deviation by the square root of the sample size. In this case, the population standard deviation is 10 and the sample size is 55, so the standard error of the mean is 10/sqrt(55) = 1.34.