River	Abundance	Tree.Area
7	0.34	17.2
4	0.6	20.7
3	0.9	24.1
14	1	29.8
5	1.1	25.3
1	1.2	34.4
13	1.4	23
12	1.5	40.2
9	1.8	37.9
10	2	26.4
6	2.1	40.2
11	2.3	34.4
8	2.6	41.3
15	2.9	43.6
2	3.4	47.1

)You'll see that not only do you get the same estimates for the intercept (b0) and slope (bl), but also the standard errors, t-values, and P values for those estimates. Is our slope estimate signicant (assume an alpha of 0.05)? How can you tell? What does that mean in terms of our original question-PI