posted by mary on .
a math test has a mean of 43 and a standard deviation 0f 17.0. find the corresponding z scores for. show all work.
I. a test score of 13
II. a test score of 59
z = (x - mean)/(standard deviation)
how is the problem worked out?
thank you for the information. so clarify i would just plug in the test scores such as 13 and 59 for the x value and 43 for mean with 17.0 for the standard deviation to come up with the following :
z=(13-43)/17.0= 10.47058824 to round off to 10.0?
z= (59-43)/17.0=56.47058824, round off to ?
please coonfirm and show where i went wrong. thank you very much.