7 Given the following set of yield data (Mg/ha) for barley treated with different levels of nitrogen fertilizer: 0 Replicate Treatment (kg N/ha) 50 Replicate 100 150 Replicate Replicate Sam 1 2 3 1 2 3 1 2 3 1 3 1 2.3 2 1.9 1.5 3 352 1.7 3.9 2.9 3 5.5 5.9 5.4 7.0 6.4 5.6 3.5 3.4 5.2 5.7 5.3 7.1 6.9 6.0 4.3 5.9 7.2 6.3 6.2 a. Complete the ANOVA and perform the F-test at the 95 and 99% levels of confidence using the appropriate error term. b. Calculate the coefficient of variation. c. d. Calculate the LSD- and 7, values for a-0.05. The 7, value will be calculated using the Tukey-Kramer procedure. If the F-test for treatments is significant, indicate what means are not significantly different using lower case letters. Do this using the LSD-value and T. value (calculated using the Tukey-Kramer procedure) for a=0.05.