5. An analyst ("A") determines the percentages of ferrous oxide in a standard ore sample based on six replicate analyses: 16.55, 16.60, 16.38, 16.60, 16.58, and 16.57% FeO. For this dataset, calculate the mean, median, range (highest minus lowest), average deviation, and standard deviation. A second analyst ("B") analyses the same standard ore sample using the same method and performs six replicate analyses obtaining the following results: 16.80, 16.74, 16.96, 16.84, 16.82, and 16.92% FeO. For this dataset, calculate the mean, median, range (highest minus lowest), average deviation, and standard deviation.

8. The National Institute of Standards and Technology (NIST) reports 16.55% FeO for the ore sample analyzed by the analysts "A" and "B" in problems 5 and 6. What can you conclude about the accuracy of these analysts at the 95% confidence level?