3. The following set of data is for the measurement of the mass of Ca in g in a solid sample with an average total mass of 4.3382 ± 0.0054 g.

0.3775, 0.3795, 0.3788, 0.3762, 0.3802

a. Calculate the mean, standard deviation, and relative standard deviation for the mass of Ca in g.

b. Using the average total mass and standard deviation is given, calculate the average percent weight of Ca and standard deviation in the percent weight? You will need to use propagation of error to get the standard deviation of the percent weight Ca. From the average and standard deviation, calculate the RSD and 95% confidence interval of the percent weight Ca also.