Macmillan Learning An environmental scientist developed a

Last updated: 4/3/2024

Macmillan Learning An environmental scientist developed a new analytical method for the determination of cadmium Cd2 in mussels To validate the method the researcher measured the Cd2 concentration in standard reference material SRM 2976 that is known to contain 0 82 0 16 ppm Cd2 Five replicate measurements of the SRM were obtained using the new method giving values of 0 791 0 747 0 831 0 842 and 0 764 ppm Cd Calculate the mean x standard deviation s and the 95 confidence interval A list of t values can be found in the Student s 1 table x ppm ppm