A school administrator wants to see if there is a difference in the number of students per class for Clackamas Public School district (group 1) compared to the Forest Grove School district (group 2). A random sample of 27 Clackamas classes found a mean of 32 students per class with a standard deviation of 3. A random sample of 28 Forest Grove classes found a mean of 38 students per class with a standard deviation of 4. Assume all conditions are met for inference. Find a 99% confidence interval in the difference of the means. ( , ) Round to 1 decimal place Interpret the confidence interval in context: Round all values to 1 decimal place We are % confident that the difference in sample mean class size between Clackamas and Forest Grove is between and