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A Random Sample of N = 4 Scores Is Obtained

Question 13

Multiple Choice

A random sample of n = 4 scores is obtained from a population with a mean of µ = 80 and a standard deviation of σ = 10.If the sample mean is M = 90,what is the z-score for the sample mean?​


A) ​z = 20.00
B) ​z = 5.00
C) ​z = 2.00
D) ​z = 1.00

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