The scores on a standardized test for 322 students in nontraditional math classe

Question

The scores on a standardized test for 322 students in nontraditional math classes were compared to the scores of 273 students in traditional math classes. Computer software was used to create a confidence interval for the difference in mean scores. Conf level: 99% Variable: (NonTrad)-1(Trad) Interval: (-3.212. 2.612) a) What is the margin of error for this confidence interval? ME- b) If we had created a 98% confidence interval, would the margin of error be larger or smaller? Smaller O Larger c) Does this result suggest that students who learn mathematics with nontraditional methods will have significantly higher mean scores on standardized tests than those in traditional classes? Explain O A. No. Because the interval contains zero, there is insufficient evidence to conclude that students who learn mathematics with nontraditional methods will have higher mean scores on standardized tests than those in traditional classes B. Yes. ecause the interval contains zero, there is strong evidence to conclude that students who learn mathematics th nontraditional methods have h gher mean scores on standard ze tests than hos en rad tional c ses. O C. No. Because the entire interval is above zero, there is insufficient evidence to conclude that students who leam mathematics with nontraditional methods will have higher mean scores on standardized tests than those in traditional classes O D. Yes. Because the entire interval is above zero, there is strong evidence to conclude that students who learn mathematics with nontraditional methods will have higher mean scores on standardized tests than those in traditional classes

Explanation / Answer

The scores on a standardized test for 322 students in nontraditional math classes were compared to the scores of 273 students in traditional math classes. Computer software was used to create a confidence interval for the difference in mean scores. Conf level: 99% Variable: (NonTrad)-1(Trad) Interval: (-3.212. 2.612) a) What is the margin of error for this confidence interval? ME- b) If we had created a 98% confidence interval, would the margin of error be larger or smaller? Smaller O Larger c) Does this result suggest that students who learn mathematics with nontraditional methods will have significantly higher mean scores on standardized tests than those in traditional classes? Explain O A. No. Because the interval contains zero, there is insufficient evidence to conclude that students who learn mathematics with nontraditional methods will have higher mean scores on standardized tests than those in traditional classes B. Yes. ecause the interval contains zero, there is strong evidence to conclude that students who learn mathematics th nontraditional methods have h gher mean scores on standard ze tests than hos en rad tional c ses. O C. No. Because the entire interval is above zero, there is insufficient evidence to conclude that students who leam mathematics with nontraditional methods will have higher mean scores on standardized tests than those in traditional classes O D. Yes. Because the entire interval is above zero, there is strong evidence to conclude that students who learn mathematics with nontraditional methods will have higher mean scores on standardized tests than those in traditional classes

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