# standard scores

Consider a normal population with µ = 25 and Ï? = 8.0.

(A) Calculate the standard score for a value x of 23.

(B) Calculate the standard score for a randomly selected sample of 45 with X(line on top)= 23.

(C) Explain why the standard scores of 23 are different between A and B above.

https://brainmass.com/math/discrete-structures/standard-scores-385809

#### Solution Preview

(A) z = (x- mu)/sigma = (23 - 25)/8 = -0.25

(B) z = (x-bar - ...

#### Solution Summary

Calculate the standard scores in this case.

$2.19