Japanese researchers have developed a compression/depression method of testing electronic circuits based on Huffman coding. (IEICE Transactions on Information & Systems, Jan. 2005.) 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 using the standard compression/depression method and the new Huffman-based coding method, and the compression ratio was recorded. The data are given in the next table. Compare the two methods with a 95% confidence interval. Which method has the smaller mean compression ratio?

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CIRCUITS Circuit Standard Method Huffman Coding Method 1 .80 .78 2 .80 .80 3 .83 .86 4 .53 .53 5 .50 51 6. .96 .68 7 .99 .82 8 .98 .72 9. .81 45 10 .95 .79 11 .99 .77