Using the sum of squares obtained in Exercise 12.3, test at the level of significance \(\alpha=0.01\) whether the differences among the means obtained for the 3 samples are significant.

Data From Exercise 12.3

Transcribed Image Text:

12.3 Three alternatives are suggested for electroplating to reduce dissolved metal cations so that they form a coherent metal coating on an electrode. In an exper- iment conducted to compare the manufacturing yields using the three alternatives, experimenters record the number of electrodes coated before the metal cations are exhausted. Suppose the data are Alternative X Alternative Y Alternative Z 321 327 319 325 324 331 318 326 328 330 329 322