A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spend studying per week. Based on a simple random sample, they surveyed
144 students. The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours.
What is the standard error of the mean?
A) 0.83
B) 10
C) 0.5
D) 2
E) None of the choices are correct

Question

Quizplus · Accepted Answer

The standard error of the mean is calculated by dividing the standard deviation by the square root of the sample size. In this case, the standard error of the mean is 10 / sqrt(144) = 0.83.

A Group of Statistics Students Decided to Conduct a Survey