5. The circumference of a particular species of tree was thought to be different depending on certain geographical factors. An SRS of 60 trees is selected in Sequoyah National Forest, where it is found that -6 meters with a standard deviation si 3 meters. A second SRS of size 40 is independently selected in Yellowstone National Forest, and it is found that 2-4 meters with a standard deviations 2 meters. Let p and represent, respectively, the true mean circumference of this particular species of tree. (a) Construct a 95% confidence interval for - and interpret it in context. (b) From the confidence interval you calculated in (a), can we conclude that the two population means are equal or not, and why? (e) Test the following hypotheses at 5% significance level follow the 5-step Ho: VH How does your conclusion compare to the one you obtain from part (b)