The specification for a plastic liner for concrete highway projects calls for a thickness of $6\mathrm{.}0mm+-0\mathrm{.}1mm.$ The standard deviation of the process is estimated to be $0\mathrm{.}02mm.$ The process is known to operate at a mean thickness of $6\mathrm{.}03mm.$ What is Cpk for this process? give answer in $2dp.$