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Does training in study skills make a difference for student success?  8 students received training (M1= 85, SS1= 100) and 8 students did not (M2= 80, SS2= 124). Test using α = .05   Which is the null hypothesis, H0?

[example continued…] Scenario: 100 people were asked, “Who is your favorite superhero?” Below are the data.  Test the null hypothesis that the population frequencies for each category are equal.  α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 20 fo = 30 fo =30 fo = 20 fe = fe = fe = fe = The correct APA format for the result would include

Scenario: 100 people were asked, “Who is your favorite superhero?” Below are the data.  Test the null hypothesis that the population frequencies for each category are equal.  α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 20 fo = 30 fo =30 fo = 20 fe = fe = fe = fe = The expected frequency,  fe = ____  

If a hypothesis test produces a z score in the critical region, what decision should be made?

If a study finds that there is a correlation between volunteering behavior and the personality trait of Extroversion, it means that volunteering causes Extroversion.  True or False?

[Example continued…] The average Instagram user spends 30 minutes per day using Instagram (μ = 30), and σ is unknown. Test whether ARC students who are Instagram users (n = 25, M = 24, SS = 2400) differ from the average Instagram user on number of minutes spent using Instagram per day. α = .05. The critical t score boundaries =

A one sample t test has n = 20. If using a two-tail test (proportion in two tails combined) with an alpha = .05, the critical t score boundaries =

A vertical line drawn through a normal distribution at z = +0.99 separates the distribution into two sections, the body and the tail. What proportion of the distribution is in the body?

[Example continued…] The average Instagram user spends 30 minutes per day using Instagram (μ = 30), and σ is unknown. Test whether ARC students who are Instagram users (n = 25, M = 24, SS = 2400) differ from the average Instagram user on number of minutes spent using Instagram per day. α = .05. What is the correct result based on the data?

What is the denominator in the one sample t test formula?