Question: The standard deviation of a group of 40 students’ test scores was calculated as 6.5 points on a 100 point test and the mean of their distribution of scores was 75.5 points. Calculate the z value associated with each of the following students’ scores. Please round each answer to the second decimal place, i.e. x.xx.

z = \[\frac{x-mean}{s}\]

x stands for the score of interest.

s stands for the sample standard deviation.

Student A scored 75.5 points: z = _________ 5 points.

Student B scored 72.0 points: z = _________ 5 points.

Student C scored 10.9 points: z = _________ 5 points.

Student D scored 77.7 points: z = _________ 5 points.