Normal z score for normally distributed data

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Four students each received a raw score of 22 on a different test. Compute the z-score for the raw score value of 22 for each student, given information about the distributions of X values for each test. Which student (a, b, c, or d) had the highest score value, compared to the normative group who took the same test? Which student did the poorest in this group, compared to the normative group who took the same test? Why?

a. X = 22, when M = 20, SD = 5, Z = ?

b. X = 22, when M = 30, SD = 5, Z = ?

c. X = 22, when M = 16, SD = 2, Z = ?

d. X = 22, when M = 10, SD = 8, Z = ?

Reference no: EM1398844

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