The following moisture–unit weight (density) data are results from laboratory compaction tests: (a) Plot the curve for the moisture–dry unit weight relationship and indicate maximum dry unit weight...

The following moisture–unit weight (density) data are results from laboratory compaction tests:

(a) Plot the curve for the moisture–dry unit weight relationship and indicate maximum dry unit weight and optimum moisture content.

(b) What range of water content appears advisable in order to obtain 92 percent (or more) compaction?