Japanese researchers have developed a compression$-$depression method of testing electronic circuits$$based on Huffman coding. The new method is designed to reduce the time required for input$$decompression and output compression $$ called the compression ratio. Experimental results were$$obtained by testing a sample of $11$ benchmark circuits $($all of different sizes$)$ from a SUN Blade $1000$workstation$.$ Each circuit was tested with the standard compression$-$depression method and the new$$Huffman$-$based coding method and the compression ratio recorded. The data are given in the table$$below$.$Compare the two methods with a $95\%$ confidence interval. Which method has the smaller mean$$compression ratio?