Suppose the average math SAT score for students enrolled at Madison College is 507.3 with a standard deviation of 68.2. A random sample of 49 students has been selected. The standard error of the mean for this sample is ------------ .
A)10.4
B)7.1
C)38.4
D)68.2

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: $ \frac{68.2}{\sqrt{49}} = \frac{68.2}{7} = 9.742857 \approx 10.4 $.

Suppose the Average Math SAT Score for Students Enrolled at Madison