12 Jul WOULD THE ALTERNATIVE HYPOTHESIS BE ONE-TAILED (DIRECTIONAL) OR TWO-TAILED (NON-DIRECTIONAL)?
how much to complete with best expert 10 questions with all work shown step by step in the format of attached material Document Preview: Psychology 402 Name______________________________ 1 Exam #3 (Online) July 10, 2014 Complete the analyses as described below. Show your work! Partial credit can be given only if you show your calculations. While you are allowed to use your textbook, notebook, and calculator, you must complete the exam individually –group work is not allowed! Also, you are not allowed to seek assistance from campus tutoring services. Feel free to include scanned and/or photographed images of calculations, graphs, etc., within your file submission –and please remember to include your LAST NAME as the first word of the filename of the SINGLE file you upload. This exam should be submitted to the “Unit Exam” link (not via email!) by July 13, 20014, 11:59pm. Things to do (10 points each): 1) In a study on attraction, suppose 14 subjects were asked to rate the perceived intelligence of people photographed before orthodontic treatment (braces) on a scale where larger numbers indicate higher levels of intelligence. Two weeks later these same subjects returned to rate another set of pictures, the same people photographed after orthodontic treatment. If you wanted to test the hypothesis to see if there was any change in perceived intelligence from the before-braces to the after-braces conditions, what would be the appropriate analysis? What would be the null and alternative hypotheses for this test? Would the alternative hypothesis be one-tailed (directional) or two-tailed (non-directional)? Why? 2) The perceived intelligence rating results from the study described in #1, above: Subject Before After 1 113 115 2 105 117 3 120 125 4 119 117 5 104 107 6 100 105 7 111 110 8 130 125 9 119 121 10 127 130 11 111 110 12 115 117 13 107 113 14 102 105 Based on these results, calculate the appropriate test for these data (assume a = 2 .05). Be sure to state the calculated and critical values of the statistic for this test. Would you reject or fail to reject the null hypothesis in this situation? Why?… Attachments: Psyc-402–Onl….pdf
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