Question: 12 PSS Section - Include your output! 2. (10 points) A psychologist believes that a moderate dose of caffeine can improve memory. She designed an

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12 PSS Section - Include your output! 2. (10 points) A psychologist

PSS Section - Include your output! 2. (10 points) A psychologist believes that a moderate dose of caffeine can improve memory. She designed an experiment in which she randomly assigned half of her available pool of 40 college students to the caffeine condition and half to the placebo condition. Thirty minutes after drinking a cup of fruit juice containing either caffeine (150 mg) or a placebo, participant in both groups studied the same list of 30 words for 30 minutes before being challenged with a test of free recall. ANSWER THIS QUESTION: Is there a significant difference between the two groups? Be sure to write your t-statement in APA. Here are the data's output: T-Test [DataSetO] C: \\Users\\amaraden\\Documents\\Beacon College\\Awesome Courses\\PSY2900 Behavioral Statistics\\Exams\\CaffeinesWordCounts. sav Group Statistics Sid. Error Group N Mean Sid. Deviation Mean WordCount Caffeine 20 20.7000 3.19704 71488 Placebo 20 19.2500 3.38534 75699 Independent Samples Test Levene's Test for Equality of Variances i-test for Equality of Means 95% Confidence interval of the Difference Mean Sid Error Sig Sig. (2-tailed) Difference Difference Upper WordCount Equal variances 176 678 1393 38 172 1.45000 1.04119 - 65778 355778 assumed Equal variances not 1.393 37 876 172 1,45000 1.04119 .65801 3.55801 assumed

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