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
Correct Answer:

Verified
Correct Answer:
Verified
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