The local vet is concerned about overweight labrador retrievers. She wants to construct a 99% confidence interval for the true mean weight of labradors. Here's what she has so far:

Sample mean = 75.4 pounds

t score = 2.72

Standard error = 3

Round answer to 2 decimal places, i.e., XX.XX

Do not include leading or ending zeros.

Lower limit =

Upper limit =