Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 19 , upper bound is 31 . The point estimate of the population mean is

Step 1 ：Given the lower bound of the confidence interval is 19 and the upper bound is 31.

Step 2 ：Calculate the point estimate of the population mean, which is the average of the lower and upper bounds of the confidence interval. This is calculated as \((19 + 31) / 2 = 25.0\).

Step 3 ：Calculate the margin of error, which is the difference between the point estimate and one of the bounds. This is calculated as \(25.0 - 19 = 6.0\).

Step 4 ：Final Answer: The point estimate of the population mean is \(\boxed{25.0}\) and the margin of error for the confidence interval is \(\boxed{6.0}\).