Hands-on Portion for Exam 3

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Hands - on Portion for Exam 3 1. You are given a t - statistic of - 0.38. Write a short paragraph on whether the t - statistic means that there are differences between two groups. It is up to you decide how to name the two groups in your paragraph. A study to evaluate differences in educational quality between two training centers, a standardized examination is given to individuals who are trained at the centers. The examination scores are a major factor in assessing any quality differences between the cente rs. The means for the two centers are as follows: μ 1 is the mean examination score for the population of individuals trained at center A and μ 2 is the mean examination score for the population of individuals trained at centers B. For α=0.05 and thus t=±2.074 with df=22, the rejection region for the two - tailed hypothesis. Since - 0.38> - 2.074, it falls the rejection region, the conclusion is to reject H o . Thus, we can conclude that μ 1 and μ 2 are not equal and that the two centers differ in terms of educational quality. 2. You are given a t - statistic of 7.00. Write a short paragraph on whether the t - statistic means that there are differences between two groups. It is up to you decide how to name the two groups in your paragraph. A population of system analysts using the current technology and a population of systems analysts using new software package. In terms of the time required to complete the information system design project, the population mean are as follow: μ 1 is the mean project completion time
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