Question: A 76.3% certified sample is analyzed by replicated measurements using two methods A and B with same sample sizes. Method A obtained a mean value

A 76.3% certified sample is analyzed by replicated measurements using two methods A and B with same sample sizes. Method A obtained a mean value of 78.0% and standard deviation of 3.4%. Method B obtained a mean value of 76.5% and standard deviation of 0.1%. Which method is more accurate, and which one is more precise?

options:

a) A is more accurate, A and B are as precise

b) B is more accurate, A and B are as precise

c) A is more accurate and precise

d) B is more accurate and precise

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