A sample of n4 scores has a mean of m75 find the z score


A sample of n=4 scores has a mean of M=75 find the z score for this sample:

a. If it was obtained from a population with u =80 and o=10

b. If it was obtained from a population with u=80 and o=20

c. If it was obtained from a population with u=80 and o=40

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Basic Statistics: A sample of n4 scores has a mean of m75 find the z score
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