Question Set 2: Mathematical Reasoning Skills by Curriculum A large school district is considering changing their kindergarten mathematics curriculum. Before making any major changes, they first want to collect data to compare the outcomes of the two curricula. They have obtained a representative sample of 70 kindergarten students and randomly assigned each to be taught with either the new or old curriculum. After one year of instruction, all students completed an assessment of mathematical reasoning skills. Summarized sample data are presented in the table below. A. Construct a 95% condence interval to estimate the mean difference in the mathematical reasoning scores of the two groups. Use Minitab Express; you should not need to do any hand calculations. Remember to Wall relevant Minitab Express output and to clearly Identify your answers. [15 points] B. Use the five-step hypothesis testing procedure given below to determine if there is evidence that the mean mathematical reasoning scores are different in the population. If assumptions are met, conduct a ttest. Use Minitab Express; you should not need to do any hand calculations. Remember to We\" relevant Minitab Express output and to clearly identify your answers. [25 points] MCheck assumpticlls and write hypotheses 5&9; Calculate the test statistic Sitea; Determine the p value 329$ Decide to reject or fail toureject the null hypothesis mascara a real-world conclusion C. Compute Cohen's d- for the difference in the m means. You will need to do calculations by hand. Remember to show all work. [10 points] Fer a review-of Cohen's d see page 6.4 of the online course notes. I; . 'Dglnterpret-the value of Cohen's d that you computed in part C. [5 points]