$ sudo apt-get update
$ sudo apt-get install pocketsphinx-lm-en-hub4 

pocketsphinx-lm-en-hub4 is installed in your system.

Make ensure the pocketsphinx-lm-en-hub4 package were installed using the commands given below,

$ sudo dpkg-query -l | grep pocketsphinx-lm-en-hub4 *

You will get with pocketsphinx-lm-en-hub4 package name, version, architecture and description in a table

pocketsphinx-lm-en-hub4 package basic information: