A collaborative study was conducted to study the precision and homogeneity of a method of determining the amount of niacin in cereal products (Campbell and Pelletier 1962). Homogenized samples of bread and bran flakes were enriched with 0, 2, 4, or 8 mg of niacin per 100 g. Portions of the samples were sent to 12 labs, which were asked to carry out the specified procedures on each of three separate days. The data (in milligrams per 100 g) are given in the file niacin. Conduct two-way analyses of variance for both the bread and bran data and discuss the results. (Two data points are missing. Substitute for them the corresponding cell means.)
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.