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QUESTION

Consider the sample data for plants A, B, C D of the company below, which are tabulated in table 1. Test whether the four means are equal at the 5%...

Consider the sample data for plants A, B, C & D of the company below, which are

tabulated in table 1. Test whether the four means are equal at the 5% level of significance. Perform a test that will compare all 4 means at once. We are not interested in pair-wise comparisons at this stage. Please show all the steps in your calculations.

Table 1:

A     B     C      D

333 328 320 333

332 329 321 321

320 323 322 329

326 327 325 330

328 330 326 328

325 331 328 325

323 332 329 333

321 320 330 331

334 324 331 327

322 323 332

320 334

329

330

328

331

330

A B333332320326328325323321334322320329330328331330 C328329323327330331332320324323334 D320321322325326328329330331332 333321329330328325333331327...
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