In a random sample of 5 residents of the state of Tennessee, the mean waste recycled per person per day was 1.1 pounds with a standard deviation of 0.25 pounds. Determine the 99% confidence interval for the mean waste recycled per person per day for the population of Tennessee. Assume the population is approximately normal. Step 1 of 2: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.