What is the z-score for this sample mean

Reference no: EM13495917

A normal population has µ = 50 and = 8. A random sample of n = 4 scores from this population has a mean of 54. What is the z-score for this sample mean?

A) +0.50
B) +1.00
C) +2.00
D) +4.00

Reference no: EM13495917

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