A lumber company is making boards that are 2920.0 millimeters tall. If the boards are too long they must be trimmed, and if they are too short they cannot be used. A sample of 12 boards is made, and it is found that they have a mean of 2922.7 millimeters with a variance of 121.00. Is there evidence at the 0.05 level that the boards are either too long or too short? Assume the population distribution is approximately normal. Step 2 of 5 : Find the value of the test statistic. Round your answer to three decimal places.