The expected mean of the normal probability distribution of possible returns for XYZ Corporation is 15%. The standard deviation is 2%. Calculate the range of possible values allowing you a 67% confidence interval around the expected retur
A) 13% - 17%
B) 10% - 20%
C) 11% - 19%
D) 14% - 16%

Question

Quizplus · Accepted Answer

A 67% confidence interval for a normal distribution corresponds to plus or minus one standard deviation from the mean. Given a mean of 15% and a standard deviation of 2%, the range is 15% ± 2%, which is 13% to 17%.

The Expected Mean of the Normal Probability Distribution of Possible