Blog

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 is the null hypothesis (H0)  

A class consists of 20 psyc majors, 20 nursing majors, and 10 social work majors.  If one student is randomly selected from the class, what is the probability that the student is a social work major  p(social work major)?

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