The table below contains the birth weights in grams of 26 African American babies born at BayState Medical Center in Springfield, Massachusetts in 1986. Compute a 95% confidence interval for birth weight.

1. Determine the value of tc. Round your answer to 5 decimal places.
2. Find the margin of error for the confidence interval. Round your answer to 1 decimal place.
3. Construct the confidence interval for birth weights. Enter your answer as an open interval of the form (a,b) and round to the nearest integer.
4. Babies weighing less than 2500 grams are considered to be of low birth weight. Can you conclude that the average birth weight is greater than 2500 grams?
   • Yes, the entire confidence is above 25002500.
   • No conclusions can be drawn since the confidence interval contains 25002500.
   • No, the entire confidence interval is below 25002500.