Using the same data as question 3. State the lower boundary of the 95% confidence interval for the mean value of yfor all children with elevated lead levels who are 10 YEARS old. In your calculation use Se = 5.22 no matter what you got for 55- in your calculation in question 6 and state your answer rounded to one place of decimal. Note that this is a twotailed confidence interval, but you are entering only the lower boundary as your