solved:A 76.3% certified sample is analyzed by replicated measurem

  

A 76.3% certified sample is analyzed by replicated measurements… 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 preciseb) B is more accurate, A and B are as precisec) A is more accurate and precised) B is more accurate and preciseMathStatistics and Probability SCIENCE 203