One year, the mean age of an inmate on death row was 38.4 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds th their mean age is 36.5, with a standard deviation of 9.4. Construct a 95% confidence interval about the mean age. What does the interval imply? Click the icon to view the table of critical t-values. Choose the correct hypotheses. I H y (Type integers or decimals. Do not round.) Construct a 95% confidence interval about the mean age. With 95% confidence, the mean age of a death row inmate is between years and years. (Round to two decimal places as needed.) What does the interval imply? O A. Since the mean age from the earlier year is not contained in the interval, there is sufficient evidence to conclude that the mean age had changed. O B. Since the mean age from the earlier year is contained in the interval, there is not sufficient evidence to conclude that the mean age had changed O C. Since the mean age from the earlier year is not contained in the interval, there is not sufficient evidence to conclude that the mean age had changed O D. Since the mean age from the earlier year is contained in the interval, there is sufficient evidence to conclude that the mean age had changed