In tree crop spraying, an airblast sprayer was used with and without an air oscil- lator on grapefruit and orange trees in an experiment to evaluate the delivery of a solution. Data for the four treatments (grapefruit trees with oscillator, grape- fruit trees without oscillator, orange trees with oscillator, orange trees without oscillator) consisted of 72 observations. The corresponding sample means and sample standard deviations of the solution deposited in nanograrns per square centimeter (ng/cmz) appear in Table 2.9. (a) Analyze the data as a one-way layout by constructing the corresponding ANOVA table. Are there signicant differences between the treatments? (Him: The mean squared error can be calculated by pooling the sample variances and the treatment sum of squares can be determined from the sample means.)