Members of a freshman orientation class take a time manageme

Members of a freshman orientation class take a time management test. Their average time management score is 82, and the standard deviation for their scores is 6. Using the formula for standard error of the mean symbol, what will the standard error be when

A. the sample size is 25,

B. the sample size is 36, and

C. the sample size is 49?

Solution

a)

SE = s/sqrt(n) = 6/sqrt(25) = 1.2 [ANSWER]

******************

b)

SE = s/sqrt(n) = 6/sqrt(36) = 1 [ANSWER]

*******************

c)

SE = s/sqrt(n) = 6/sqrt(49) = 0.857142857 [ANSWER]