Question

Four students took a national standardized test for which the mean was 500 and the standard deviation was 100. Their scores were 560, 450, 640, and 530. Determine the z-value for each student.

Answer 1

idk lol

Answer 2

for each test score

z-value = (their score - the mean) / standard deviation

so starting with the first score, 560, we calculate

(560 - 500)/100

and repeat for the other scores

Answer 3

ok ty