A sample of n = 4 scores is selected from a population with μ = 100 and σ = 20. If the sample mean is M = 110,

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A sample of n = 4 scores is selected from a population with μ = 100 and σ = 20. If the sample mean is M = 110,

[From: ] [author: ] [Date: 11-06-21] [Hit: ]

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A sample of n = 4 scores is selected from a population with μ = 100 and σ = 20. If the sample mean is M = 110, what is the z-score for this sample mean?

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the z-score formula in this case is:

z = (M - μ)/(σ/sqrt(n))

So,

z = (110-100)/(20/sqrt(4)) = 10/(20/2) = 10/10 = 1

1

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