The mean equity risk premium over a 40-year period is equal to 8.0%. The standard deviation of the sample is 12%. The standard error of the sample mean is closest to:
The mean equity risk premium over a 40-year period is equal to 8.0%. The standard deviation of the sample is 12%. The standard error of the sample mean is closest to: A.0.30%; B.1.90%; C.1.26%; D.8.00%