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The official conducts a two-sample t-test to determine whether these data provide significant evidence that students atUniversity 1 drink more than students at University 2. The test statistic is t = 2.64 with a P-value 0.005.Which of the following is an appropriate conclusion?The samples provide significant evidence that students at University 1 drink more than students at University2.The samples do not provide statistically significant evidence.We can not use the t-test in this case because the variables (number of drinks) are likely skewed to the right ateach university.Good Job! Since students were randomizedto two different groups the data obtained from thisstudy should be analyzed using the two (independent) samples t-test.!Back to course (/en-us/courseware/page/sl_stats_v1/_u5_m02_two_independent_samples7)Tutoring (/en-us/lti_navigation_launch/sl_stats_v1/58eeb3630837637d7a50017a)CALL: (855) 836-4203LIVE CHATHELP CENTER!MyLine"Log Out
Question 3 of 5Question 4 of 5In a study of the impact of smoking on birth weight, researchers analyze birth weights (in grams) for babies born to 189women who gave birth in 1989 at a hospital in Massachusetts. In the group, 74 of the women were categorized as“smokers” and 115 as “non-smokers.” The difference in the two sample mean birth weights (non-smokers minus smokers)is 281.7 grams and the 95% confidence interval is (76.5, 486.9)Which gives the best interpretation of what we can conclude about the impact of smoking on birth weight?