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For the following data: [µ = 120, σ = 25, n = 25, M = 125], σM = = ____.

[Example continued…] Locus of Control has μ = 106 and σ =12. Test whether ARC students (n = 36, M = 109) differ on Locus of Control.  α = .05.  σM =

[Example continued…] Locus of Control has μ = 106 and σ =12. Test whether ARC students (n = 36, M = 109) differ on Locus of Control.  α = .05.  What type of error could you be making?

[example continued…] A normal distribution has a mean of µ = 50 with σ = 10. If a vertical line is drawn through the distribution at X = 55, what proportion of the scores are on the right side of the line?

[example continued…] If the following scores are population data, [6,6,7,3,5,3] the Population Variance equals

What is the z score for X =90, μ = 80, σ = 5?

What is the value of (ΣX)2 for the scores 1, 4, 9?

What is the range for the following set of scores? Scores: 1, 4, 6, 11, 16, 21

What is the x score for z =+3.00, μ = 40, σ = 3?

[example continued…] If the following scores are sample data,  [6,6,7,3,5,3] the Sample Standard Deviation equals