Statistical Significance and Physical Component Score

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Homework Exercise 29
Grand Canyon University
December 23, 2012

1. Were the groups in this study independent or dependent? Provide a rationale for your answer. Answer- The group studies were independent. They were being tested by gender, male and female. They were also not matched or paired with each other. 2. t = −3.15 describes the difference between women and men for what variable in this study? Is this value significant? Provide a rationale for your answer. Answer- The variable that is described by -3.15 is the mental health variable. It is significant as indicated by the p value of 0.002. This is less than the alpha number of 0.05 3. Is t = −1.99 significant? Provide a rationale for your answer. Discuss the meaning of this result in this study. Answer- The variable that -1.99 is for is health functioning. It is significant. The p is 0.049. Since the p value is less than the alpha of 0.05 that was designated for the test. The women have lower health functioning than the men have. 4. Examine the t ratios in table VI. Which t ratio indicates the largest difference between male and females in the post MI study? Is this t ratio significant? Provide a rationale for your answer. Answer- The largest t ratio in this study is -3.15 this has a p value of 0.002. It is for the variable of mental health. It is significant. The means are 62.3 for women and 72.7 for men. There is a big difference between the two genders. 5. Consider t = −2.50 and t = −2.54. Which t ratio has the smaller p value? Provide a rationale for your answer. What does this result mean? Answer- The t ratio of -2.54 has a smaller p value (0.007) than the t ratio of -2.50 which has a p value of (0.01). The smaller the p values the less likely the findings will be in error. This result means that the men and women were different for physical role. The men (12.6 mean) scored higher on the physical role than the women (4.7 mean). 6. What is a Type I error?...
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