Three samples of each of three types of PVC pipe of equal wall thickness are tested to failure 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?

Three samples of each of three types of PVC pipe of equal wall thickness are tested to failure 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 c) 249 300 234 271 283 262 280 274 279 Warm (409 c) 323 344 297 319 320 317 300 338 302 Cool (109 c) 358 372 327 364 351 335 339 357 345 Click here for the Excel Data File (a-1) Choose the correct row-effect hypotheses. a. HQ: A] * Az * A3 0 Temperature means differ H1 : All the A; are equal to zero Temperature means are the same b. HQ: A] = A2 - A3 = 0 Temperature means are the same H1 : Not all the Aj are equal to zero Temperature means differ O a Ob(a-2) Choose the correct column-effect hypotheses. a. Ho: B] # B2 x B3 0 - PVC type means differ H : All the By are equal to zero