Answer all questions with logic and don't make random guess

(3 points) In a study to compare obesity levels between two schools, random samples of fourth graders were taken from the two schools and body mass indices (BMI) recorded. Here is a summary of the body mass index data from the two schools, Laura Secord and Charles Dickens. School Number of children measured Average BMI Standard deviations of BMI Laura Secord 7 24.3 3.1 Charles Dickens 6 21.0 2.9 Part a) Which of the following test is appropriate for the comparison? O A. A z-test for a population proportion. O B. A Chi-square test. O C. A two-sample t-test. O D. A paired t-test. Part b) In testing a hypothesis about the parameter of interest, what would your null hypothesis be? O A. The mean difference between the BMI of a fourth grader at Laura Secord and the BMI of a fourth grader at Charles Dickens is 3.3. O B. There is a difference in the mean BMI for fourth graders at the two schools. O C. The mean BMI of fourth graders at Laura Secord is greater than the mean BMI of fourth graders at Charles Dickens. O D. The difference between the mean BMI of fourth graders at the two schools is 3.3. O E. There is no difference in the mean BMI for fourth graders at the two schools.Part c) If you use a 5% level of significance, which of the following would you conclude? O A. There is sufficient evidence to suggest that the mean difference between the BMI of a fourth grader at Laura Secord and the BMI of a fourth grader at Charles Dickens is 3.3. O B. There is sufficient evidence to suggest that the difference between the mean BMI of fourth graders at the two schools is 3.3. O C. There is insufficient evidence to suggest that the mean difference between the BMI of a fourth grader at Laura Secord and the BMI of a fourth grader at Charles Dickens is 3.3. O D. There is insufficient evidence to suggest that the mean BMI of fourth graders at Laura Secord is greater than the mean BMI of fourth graders at Charles Dickens. O E. There is insufficient evidence to suggest that the difference between the mean BMI of fourth graders at the two schools is 3.3. OF. There is sufficient evidence to suggest that the mean BMI of fourth graders at Laura Secord is greater than the mean BMI of fourth graders at Charles Dickens. O G. There is sufficient evidence to suggest that there is a difference in the mean BMI for fourth graders at the two schools. OH. There is insufficient evidence to suggest that there is a difference in the mean BMI for fourth graders at the two schools