QUANT METHOD PSYCH
QUANT METHOD PSYCH PSYC 3214
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This 0 page Study Guide was uploaded by Mr. Vernie Wehner on Sunday November 1, 2015. The Study Guide belongs to PSYC 3214 at Oklahoma State University taught by Sondra Nolf in Fall. Since its upload, it has received 43 views. For similar materials see /class/232878/psyc-3214-oklahoma-state-university in Psychlogy at Oklahoma State University.
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Date Created: 11/01/15
Equot Independent t test A researcher believes that heavy doses of caffeine will hinder an individual s ability to respond quickly to surprise stimuli She thus asks 11 participants to drink four cups of coffee on an empty stomach an hour before the experiment Eleven different subjects drink only water before the experiment The experimenter then measures the participants reaction times in seconds to visual stimuli presented at random intervals on a computer screen She believes that those individuals who drank the coffee will respond slower to the stimuli than those who drank only water The median reaction times for the 22 subjects are reported below caffeine no caffeine 025 051 003 077 012 038 014 019 011 041 009 088 012 020 035 008 007 049 029 070 010 Do the data support her hypothesis Using an alpha level of 05 conduct a NHST on these data Work through all of the steps of NHST showing all of your work and interpreting the results along the way Given that the numbers above are small keep at leastfour decimalplaces in your computations Enter the data into SPSS and check your computations In an attempt to show that the Graduate Record Exam is generally biased against Hispanics a psychologist obtains quantitative GRE scores range 100 to 800 of 16 Caucasians and 9 Hispanics from the same college The 25 individuals have similar social economic backgrounds and educational histories The data follow Caucasian 550 500600650 500625 575 590 610 580 550610650 590 550 560 Hispanics 350 700 410 500 740 380 400 690 300 Is there a statistically signi cant difference between the two group means Using an alpha of 05 conduct a NHST on these data Work through all of the steps of NHST showing all of your work and interpreting the results along the way Download the APAstyle example for the independent samples ttest from the website Using the example as a template write up the results of this study in Word using APAstyle Make sure you report the statistics ttest effect size con dence intervals appropriately following APAstyle In other words follow the details of reporting these statistics exactly Enter the data into SPSS and check your computations
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