Area under the t-distribution using Interpolation

Illustrate and find the area of the following.

1. The area to the right of t = -2.552 when df = 18.

2. The area to the right of t = -1.697 when df = 30.

3. The area to the left of t = 1.337 when df = 16.

4. The area to the left of t = 2.787 when df = 25.

5. The area from t = -3.182 to t = 3.182 when df = 3.