Question

3. A researcher was interested in understanding how the age of oeset (ie., age at which juveniles were arrested for the offense the very first time) would vary by ethnicity. comparison between Hispanic and White juveniles. She perfonned statistical analysis of collected and obtained the following results, Specifically, she would like to make a the data she Using information from the above two tables, answer the following questions. a. (1.5 points) What level of a has been used in this bypothesis testing? Explain bow a was set and obtained from the above tables. at The lovel ot , has bn Uscd w e assumption of equal variances violated? Use the p value from Levene's test to (2 points) Is th explain why this assumption is violated or why it is not violated. b. for this hypothesis testing? Explain your answer. (2 points) Based on the scenario, use complete sentences to state the null (H) and alternative (Hi) hypotheses in a two-tailed i-test? Ho: d. Hi: e. (1 point) What is the mean difference in Cell A? f. (2 points) What is the calculated r value with equal variances assumed in Cell B? What is the calculated r value with equal variances not assumed in Cell C? Identify the formula and provide all calculations belovw g (I point) Calculate the degrees of freedom with equal variances assumed in Cell D. Provide your calculations. h. (2 points) Which calculated t value in the second table is appropriate to be used for the cuirrent - test. Clearly explain the answer based on the result of Levene's test. i. (2.5 points) Using the calculated r value in the row you have chosen for the 4-test,find the critical t, make a comparisor hypothesis. Clearly explain how you reach the conclusion based on statistical results between the calculated i and the critical t, and draw a conclusion on the (I point) There are two p values under the t-test for testing the equality of means. Which p value is to be used based on the result of Levene's test? j. k. (1.5 points) Based on the p value found in the preceding question, determine whether the null hypothesis in Question 3d is rejected, Clearly explain how you reach the conclusion based on statistical results. Page 4 of 4

Answer 1

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