We study the influence of wearing uniforms in middle school on attitudes toward achieving good grades. On a national survey, the average attitude score for students who do not wear uniforms is µ = 12. A sample of students who wear uniforms has scores of 8, 12, 10, 9, 6, and 7. Perform all parts of the t-test and draw the appropriate conclusions.
Answer to relevant QuestionsIn this chapter, you learned how to perform four different statistical procedures. List them. In a two-tailed test, N is 35. (a) Is the tobt of +2.019 significant? (b) Is the tobt of +4.0 significant? (a) What do we mean by the restriction of range? (b) Why is it a problem for the size of correlation coefficient? (c) Why is it a problem for the power of a correlation coefficient? For the following, which type of t-test is required? (a) Studying the effects of a memory drug on Alzheimer’s patients, testing a group of patients before and after administration of the drug. (b) Studying whether men and ...An experimenter investigated the effects of a sensitivity training course on a policeman’s effectiveness at resolving domestic disputes (using independent samples who had or had not completed the course). The dependent ...
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