pling learning The ratio of carbon-14 to carbon-12 in living systems is importan

Question

pling learning The ratio of carbon-14 to carbon-12 in living systems is important in radiocarbon dating. Researchers measured the carbon-14 to carbon-12 ratio for a variety of samples via two techniques. Which of the following cases describes how one would determine if the two analytical methods yield results that differ at the 95% confidence interval? Sample Technique 1 (x 012) Technique 2 (x10 12) 1 1.35 1.85 2 1.28 1.71 3 114 1.69 4 1.77 1.74 Case 1: Replicate measurements of a sample O made by a single technique are compared with an accepted value. Case 2: Either comparing replicate measurements of one sample made by two O analytic techniques, or samples created from two synthesis techniques measured by one analytic technique Case 3: Multiple samples are measured by two O different techniques and the results are compared

Explanation / Answer

I would use the approach described in Case2, first part: use the same sample and measure it with 2 techniques, many times (different days, but keeping the same experimental conditions in each situation).

OBS: Case 1 may also be used when a reference exists. In scientific research the refrences are always taken into consideration when a new result is obtained.

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