(times in hours). 2.51.83.32.81.52.52.32.71.42.9 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours. a. State the null and alternative hypotheses. H0:Ha:22 b. Compute the sample mean. (to 2 decimals) c. Compute the sample standard deviation. (to 4 decimals) d. Find the test statistic and p-value. (Use Table 2 in Appendix B.) t (to 3 decimals) p-value 1 e. What is your conclusion? We | reject the null hypothesis. There enough evidence to prove that the mean tree-planting time differs from 2 hours