This is from an experiment with n = 15 children in each of four groups. Fill in

Question

This is from an experiment with n = 15 children in each of four groups. Fill in the missing values. A researcher is comparing the effectiveness of two sets of instructions for assembling a child's bike. The researcher measures how much time is needed for each father to assemble the bike. Is there a significant difference in time for the two sets of instructions? Test with alpha = .05, two-tailed test. Instruction 1: 8, 4, 8, 4, 6, 7 IV: (In symbols) H: df = df_Total = M_1 = M_2 = s = t(df) = sigma X_1^2 = sigma X_2^2 = Conclusion (in plain English, no "statistical" jumble): Instruction 2: 14, 10, 6, 10 DV: (In symbols) H: df_2 = t(df) = sigma X_1 = sigma X_2 = Standard Error (SE) = Decision re H: SS_1 = SS_2 = A psychologist was hired to show that Soda A is preferred over Soda B, C, and D. Each participant simply indicated which of the four sodas was his or her top choice. Here are the data: chi^2 = df = chi^2 = Was Soda A indeed significantly preferred over the other sodas? (Yes/No)

Explanation / Answer

46)

Source SS df MS F Between 81 4-1 = 3 81/3 = 27 27/15.27 = 1.767857 Within 249-81 =168 15-4 =11 168/11 = 15.27273 Total 249 14

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