Bicarbonate in replicate samples of horse blood was measured four times byeach of two methods with the following results: Method 1: 31.40, 31.24, 31.18, 31.43 mM Method 2: 30.70, 29.49, 30.01, 30.15 mM (a) Find the mean and standard deviation for each analysis. (b) Are the standard deviations significantly different at the 95% confidence level?

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