A NIST reference material containing 267mgL Fe was analyzed

Last updated: 6/28/2023

A NIST reference material containing 267mgL Fe was analyzed by spectrophotometric and titrimetric techniques giving the results in the table below Analytical technique Titrimetry Number Mean of replicates i 8 Spectrophotometry 10 mgL 249 283 Standard deviation mgL Fe 13 27 Determine whether the techniques can accurately quantify the analyte at the 95 confidence level Explain your reasoning ii Is there a significant difference between the mean and precision of the methods 5 12