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   s(M1-M2) = 

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 = What is the correct result based on the data?

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 = Chi Square test statistic = ______

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   t =     (test statistic) =

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 =

The critical boundaries for a hypothesis test are z = +1.96 and -1.96. If the z-score for the sample mean is zM = +2.50, what is the correct statistical decision?

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   The degrees of freedom (total) (df) =

Is there a difference among the 3 treatments in the table below?  Test using α = .05 Treatment A Treatment B Treatment C 0 2 4 ∑X2 = 114 0 3 2 G = 36 0 1 4 N = 18 3 3 3 k = 3 0 2 4 0 1 4 SS1 = 7.5 SS2 = 4 SS3 = 3.5       F = ______  (test statistic, F Ratio)

Assume a normal distribution. For the following data: , the probability of a sample mean greater than 125 p(M > 125) = _______..

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?