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QUESTION 4 1. C10 Q11 V2 The Excel file STATISTICSSTUDENTSSURVEYFORR contains the column YRAGE (a numerical variable that measures student age in years) and the column RNGOOD (a categorical variable that measures whether the student feels Rachel Notley is doing a good job (No, Yes) ). For education purposes, assume that the two groups are two independent samples from a much larger normal population for statistics students. Using the difference uNo- uYes, calculate the appropriate 90% two sided confidence interval for the difference, on average, of the student ages in years for the No and Yes groups. Choose the most correct answer below. Your confidence interval is (-2.6357319, 0.1268033) and there is significant evidence that no and yes groups have significantly different ages, on average. Your confidence interval is (-2.6357319, 0.1268033) and there is no significant evidence that no and yes groups have significantly different ages, on average. Your confidence interval is (-2.9108604, 0.4019318) and there is significant evidence that no and yes groups have significantly different ages, on average. Your confidence interval is (-2.9108604, 0.4019318) and there is no significant evidence that no and yes groups have significantly different ages on average. 1 points QUESTION 5 1. C10 Q7 V3: The Excel file STATISTICSSTUDENTSSURVEYFORR contains the column ENDBREATHMIN (a numerical variable that measures post-survey student breaths per minute) and the column UNDERGORGRAD (a categorical variable that measures whether the student is planning a GraduateProfessional or an Undergraduate degree). For education purposes, assume that the two groups are two independent samples from a much larger normal population for statistics students. Use the appropriate test to test, at the 5% significance level, whether, on average, the post-survey breaths per minute differs for the GraduateProfessional and Undergraduate groups. Use the difference uGraduateProfessional - MUndergraduate. Which of the following statements is most correct? O Your test statistics is -0.1731 and you fail to reject your Ho. O Your test statistic is -0.1731 and you reject your Ho. O Your test statistic is 0.1731 and your fail to reject your Ho. O Your test statistic is 0.1731 and you reject your Ho