A sample of n = 4 scores has a mean of M = 75. Find the z-score

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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 μ = 80 and σ = 10.

b. If it was obtained from a population with μ = 80 and σ = 20.

c. If it was obtained from a population with μ = 80 and σ = 40?

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Statistics For The Behavioral Sciences

ISBN: 9781111830991

9th Edition

Authors: Frederick J Gravetter, Larry B. Wallnau

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