Three samples of each of three types of PVC pipe of equal wall thickness are tested to fallure under three temperature conditions, yielding the results shown below. Research questions. Is mean burst strength affected by temperature and/or by pipe type? Is there a "best" brand of PVC pipe? Burst Strength of PVC Pipes (psi) Temperature PVCI PVC2 PVC3 Hot (709 () 250 301 231 272 285 260 282 278 277 Warm (409 () 318 345 302 318 324 312 302 341 301 Cool (109 () 358 376 325 362 352 333 339 359 340 Click here for the Excel Data File (a-1) Choose the correct row-effect hypotheses. a. Ho: A1 # A2 # A3 #0 + Temperature means differ Hy: All the A are equal to zero