The weight percent of silicon in six different rock samples, each containing different amounts of silicon, was measured by two different methods. The results are given in the table. Sample Method A Si...

Extracted text: The weight percent of silicon in six different rock samples, each containing different amounts of silicon, was measured by two different methods. The results are given in the table. Sample Method A Si wt% Method B Si wt% 1 11.570 11.490 2 15.380 15.300 3 17.950 17.900 4 22.840 22.830 5 25.110 25.170 6 27.070 27.010 Determine tcalc · I calc = Determine ftable at the 95% confidence level. A list of t values can be found in the Student's t table. Itable =