If the value of the standard normal random variable Z is pos

If the value of the standard normal random variable Z is positive, then the original score is where in relationship to the mean? A.to the left of the mean B.equal to the mean C.to the right of the mean D.one standard deviation higher than the mean

Please show work

Solution

z-score is number of standard deviaiton a value is above the mean. Here, it is

C.to the right of the mean