[example continued…] Scenario: 100 people were asked, “What is your favorite type of TV show?” Below are the data.  Test the null hypothesis that the population frequencies for each category are equal.  α= .05. drama comedy action romance fo = 20 fo = 30 fo =40 fo = 10 fe = fe = fe = fe =   Chi Square test statistic = ______

[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 = 38, SS = 960) differ from the average YouTube user on number of minutes spent using YouTube per session. α = .05. t =     (test statistic)

[example continued…] Below is data for two variables, X and Y.  Answer the questions that follow.  X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 2 -2 -1 4 1 2 4 2 -1 -1 1 1 ___ 6 4 1 ___ 1 1 1 7 4 2 1 ___ 1 2   What is the missing value under the Y-MY column?  

[example continued…] Is there a difference among the 3 treatments in the table below?  Test using α = .05  Treatment A Treatment B Treatment C 2 3 7 ∑X2 = 461 2 3 7 G = 75 3 4 8 N = 15 3 5 8 k = 3 5 5 10 SS1 = 6 SS2 = 4 SS3 = 6   The correct APA format for the result would include

[example continued…] A normal distribution has μ = 11 and σ = 2. What is the probability of a score less than 7 from this distribution, p(X < 7)?

[Example continued…] The personality trait of “Conscientiousness” (someone who is organized, responsible, and can control their impulses) has μ = 110 and σ = 10. Test whether ARC students (n = 25, M = 117) differ on Conscientiousness. α = .05. What type of error could you be making?

[example continued…] Below is data for two variables, X and Y.  Answer the questions that follow.  X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 2 -2 -1 4 1 2 4 2 -1 -1 1 1 ___ 6 4 1 ___ 1 1 1 7 4 2 1 ___ 1 2   What is the missing value under the (X-MX)(Y-MY) column? (far right column)

Chi square is used to test __________________ dependent variables. 

Is there a difference among the 3 treatments in the table below?  Test using α = .05 Complete the ANOVA table that follows as an aid (Recommend doing so on a separate sheet of paper, or separate document), then answer the questions that follow. Treatment A Treatment B Treatment C 2 3 7 ∑X2 = 461 2 3 7 G = 75 3 4 8 N = 15 3 5 8 k = 3 5 5 10 SS1 = 6 SS2 = 4 SS3 = 6 Source           Sums of Squares           df                Mean Square           FBetween         SSbn                                dfbn             MSbn                       FWithin             SSwn                               dfwn             MSwn Total                SStot       SStot =______      SSwn = ______        SSbn = ______

A normal distribution has a mean of µ = 60 with σ = 5. If a vertical line is drawn through the distribution at X = 65, what proportion of the scores are on the left side of the line?