[example continued…] 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) = 

[example continued…] 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 correct APA format for the result would include

Scenario: I’m interested in whether there is a relationship between Team (A vs. B) and Outcome (Good vs. Bad). Below are the data.  Test the null hypothesis that the categories are independent.  α= .05. Team A Team B Good Outcome fo = 35 fe = fo = 55 fe = Bad Outcome fo = 15 fe = fo = 45 fe = The expected frequency, fe , for the Team A X Good Outcome category = _____

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?

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 =

[example continued…] Assume a normal distribution. For the following data: [µ = 120, σ = 25, n =25, M = 125], the probability of a sample mean greater than 125 p(M > 125) = _______..

[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

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

[example continued…] 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 What is the value of the critical F boundary?   (from the tables)

[example continued…] 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   dfwn = ______   dfbn = ______