Directions: The following research questions can be answered using 1 of the 5 tests you have learned so far: single-sample t-test, paired-samples t-test, independent-samples t-test, one-way ANOVA, or two-way ANOVA. Use the information in the tables to construct your SPSS data file, just as you have been doing in Part 2 of each homework assignment. There is only 1 correct choice of analysis for each question, and note that some tests are 1-tailed and some are 2-tailed. The assessment is open-book/open-notes.

For each problem involving a test of significance, your answer must include: A) SPSS output; B) an appropriate graph from SPSS; C) a Results section in current APA style including a statistical statement (i.e., t(19) = 1.79, p = .049); a sentence summarizing the results ?in English? (i.e., ?There was a significant difference between the two groups on the variable?? or ?There was no significant difference??); and a decision about the null hypothesis.

For ANOVA problems: Report statistical findings and make statements for all main effects and interaction effects. Use Tukey?s test for any analyses requiring post hoc tests. Do not create a boxplot for the 2-way ANOVA?use the graph we typically use in the course for this type of test.

Exercise: I am having trouble with the Results section.

PSYC 355 1. A clinical psychologist is studying feelings of helplessness in a sample of 18 adult participants diagnosed with hoarding disorder. He contends that those with this disorder will have stronger and more prevalent feelings of helplessness than adults in the general population. He assesses feelings of helplessness on a scale with a possible range of 1-55, with higher scores indicating higher levels of helplessness. The mean in the general population on this measure is 11.5. The sample's scores are as follows: Helplessness Scores 19 10 35 6 42 36 49 15 12 11 16 8 28 10 14 19 7 31 Do these participants score significantly higher on the helplessness scale? Choose the correct test to analyze this question, set up the SPSS file, and run the analysis. Follow the directions below. (16 pts) a) SPSS output One-Sample Statistics One-Sample Statistics N HelplessnessScores Mean 18 24.8889 Std. Deviation 20.25394 Std. Error Mean 4.77390 Page 1 of 3 PSYC 355 One-Sample Test Test Value = 11.5 95% Confidence Interval of the Difference t HelplessnessScores 2.805 df Sig. (2-tailed) 17 .012 Mean Difference 13.38889 Lower Upper 3.3168 b) SPSS graph Page 2 of 3 23.4609 PSYC 355 c) Current APA-style Results section Page 3 of 3