1 1. Approximately, what is the range (minimum to maximum value) of individual BMI values for the Control group at 24 months after randomization? a. 14 to 21 b. 16 to 18 C. 14 to 26 d. This cannot be determined without knowing the mean and standard deviation of these BMI values. 12. The estimated mean BMI difference and 95% CI for the Intervention versus Control groups at 36 months is 0.04 (-0.24, 0.32). The p-value from the corresponding t-test is 0.73. What is the null hypothesis for this t-test? a. The population level mean difference in BMI for the Intervention group compared to the Control group is greater than 0. b. The population level mean difference in BMI for the Intervention group compared to the Control group is less than 0. c. The population level mean difference in BMI for the Intervention group compared to the Control group is equal to 0. d. The chance that there is no difference population level mean difference in BMI for the Intervention group compared to the Control group is 0.73. 6 13. The estimated mean BMI difference and 95% CI for the Intervention versus Control groups at 36 months is 0.04 (-0.24. 0.32). The p-value from the corresponding t-test is 0.73. What is the interpretation of this p-value? a. There is a 73% chance the null hypothesis is true. b. If there is a population mean difference in BMI between the 2 groups, then the chances of getting a study mean difference of 0.04 (or something even *more extreme") is 0.73(73% ). C. There is a 73% chance that these study results are scientifically valid. d. If there is no population mean difference in BMI between the 2 groups, then the chances of getting a study mean difference of 0.04 (or something even "more extreme") is 0.73 (73%)