The average YouTube user spends 40 minutes per session, using YouTube (μ = 40), and σ is unknown. Test whether ARC students who are YouTube users (n = 16, M = 45, SS = 6000) differ from the average YouTube user on number of minutes spent using YouTube per session. α = .05. What is the alternative hypothesis (H1)

A one sample t test has n = 12. If using a two-tail test (proportion in two tails combined) with an alpha = .05, the critical t score boundaries =

A normal distribution has μ = 9 and σ = 2. What is the probability of a score greater than 6 from this distribution, p(X > 6)?

[Example continued…] The average YouTube user spends 40 minutes per session, using YouTube (μ = 40), and σ is unknown. Test whether ARC students who are YouTube users (n = 16, M = 45, SS = 6000) differ from the average YouTube user on number of minutes spent using YouTube per session. α = .05. t =     (test statistic)

[Example continued…] The personality trait of “Conscientiousness” (someone who is organized, responsible, and can control their impulses) has μ = 120 and σ =9. Test whether ARC students (n = 9, M = 126) differ on Conscientiousness. α = .05. Does the z score for the sample mean lie in the critical region (beyond the critical boundary)?

What is the correct conclusion based on the following ANOVA result: [F(3,16) = +1.77, p > .05]

[example continued…] Given the following data: SP = 50; SSX = 25; MY = 150; MX = 12 Predict Ŷ given X = 2

Given the following data: SP = 50; SSX = 25; MY = 150; MX = 12 The slope, b = 

[example continued…] Does training in stress reduction make a difference for student success?  15 students received training (M1= 88, SS1= 400) and 15 students did not (M2= 82, SS2= 440). Test using α = .05   s(M1-M2) = 

[example continued…] Given the following data: SP = 50; SSX = 25; MY = 150; MX = 12 The y intercept, a =