We study the effect of wearing uniforms in middle school on attitudes toward achieving good grades. On a national survey, the average score for students who do not wear uniforms is m = 79. A sample of 41 students who wear uniforms has a mean score of 83.5 (variance = 159.2). Run the appropriate analysis to determine if there is a significant difference between attitudes based on uniforms or no-uniforms. a) Calculate your t-obtained. b) Do you retain or reject the null hypothesis? c) Report your findings in APA format and be sure to include a statistical statement for your results.

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