/usr/lib/linux-tools/4.15.0-1016-aws/cpupower is in linux-tools-4.15.0-1016-aws 4.15.0-1016.16.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/linux-tools/4.15.0-1016-aws/../../linux-aws-tools-4.15.0-1016/cpupower