Joan's Nursery specializes in custom-designed landscaping for residential areas. Labor costs of planting trees are important to the nursery, so they compiled the planting times for the first and last trees planted on 30 consecutive work days. Based on this sample, is there a difference in the time it takes between the first and last tree? Treat the data as paired. a. State the null and alternative hypotheses. b. What is the test statistic? c. What is the p-value? d. State your conclusion. First Tree Last Tree 2.2 1.8 2.7 1.9 1.7 1.4 1.5 1.7 3.3 2 2.3 2 1.7 1.7 1.1 1.3 2.4 1.5 1.8 1.9 0.9 1.4 1.7 1.2 2.2 1.4 1.3 1.7 1 1.2 2.8 2.7 2.1 1.7 1.5 1.5 1.7 1.2 2 1 2.3 2 1.4 1.7 1.2 1.6 1.9 1.6 2 1.3 1.5 1.8 1.5 1.3 3 1.7 1.1 1.6 0.9 1.7