The learning objectives for activity #7 include being able to interconvert free energy changes (ΔG or ΔPE), equilibrium constants (Keq) and the percentages of the two conformers at equilibrium. Unfortunately, I neglected to list practice problems for this topic and there are three in Sorrell that you can attempt (and probably even more if you look back at your Chem 102 text):
Sorrell Ex. 3.6, 3.7, 3.14