Use the power.exp() function in the R package dae to answer the following question. Compute the power to detect MAIN effects in the following completely randomized 3X3 factorial experiment with 2 replicates. Assume we have an estimate of 25 for (the residual standard error), we use a = 0.05. We are interested in differences between means that exceed 50 units. The power, accurate to 2 decimal places, is