Suppose the average math SAT score for students enrolled at local community college is 490.4 with a standard deviation of 63.7. A random sample of 49 students has been selected. The standard error of the mean for this sample is ________.
A) 10.6
B) 9.1
C) 63.7
D) 28.4

Question

Quizplus · Accepted Answer

The formula for standard error of the mean is standard deviation / square root of sample size. Plugging in the given numbers, we get:
63.7 / sqrt(49) = 9.1

Suppose the Average Math SAT Score for Students Enrolled at Local