The following data were obtained in an experiment designed to check whether there is a systematic difference in the weights obtained with two different scales: Weight in grams ofrock specimen Specimen 1 2 3 4 5 6 7 8 9 10 Scale I 11.23 14.36 8.33 10.50 23.42 9.15 13.47 6.47 12.40 19.38 Scale H 11.27 14.41 8.35 10.52 23.41 9.17 13.52 6.46 12.45 19.35 (:1) Use the paired ttest at the 0.05 level of signicance to see if there is a difference in the mean weights obtained with two different scales. (b) Repeat (a) but use a pooled two-sample t test. (c) Are the conclusions drawn from (a) and (b) consistent, why or why not