[example continued…] Below is data for two variables, X an…

[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) 6 1 -1 -4 1 16 ___ 7 5 0 0 0 0 0 7 6 0 ___ 0 1 0 8 8 1 3 ___ 9 3 What is the missing value under the Y-MY column?  

[Example continued…] The average YouTube user spends 40 mi…

[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 = 2160) differ from the average YouTube user on number of minutes spent using YouTube per session. α = .05. s2 =

[Example continued…] The average YouTube user spends 40 mi…

[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 = 2160) differ from the average YouTube user on number of minutes spent using YouTube per session. α = .05. The correct APA format for the result would be

[example continued…] Alice’s  Test                        …

[example continued…] Alice’s  Test                                                 Andy’s Test   Alice’s Score: 92                                       Andy’s Score: 91 Class Average: 87                                   Class Average: 85 Standard Deviation: 2                          Standard Deviation: 2   According to their z scores, who’s score was more impressive?