1. Nine samples of PVC pipe of equal wall thickness are testedunder three temperature conditions to failure, yielding the resultsshown below. Research questions: Is mean burst strengthaffected by temperature level? Is there an “ideal” temperaturelevel? Explain. You will need to enter the data into Minitab.

Burst Strength of PVC Pipes (Pounds Per SquareInch)
Temperature
Hot (70 Degrees C)	Warm (40 Degrees C)	Cool (10 Degrees C)
250	321	358
301	342	375
235	302	328
273	322	363
285	322	355
260	315	336
281	299	341
275	339	354
279	301	342

• At the 0.05 level of significance, determine if there is adifference mean burst strength by temperature level. State yourhypotheses and show all 7 steps clearly. (14 points)
• Give and interpret the p-value. (3 points)
• Should Tukey pairwise comparisons be conducted? Why or why not?(3 points)
• If appropriate, use Minitab to produce Tukey pairwisecomparison. Write a few sentences with your conclusions from thosecomparisons. (4 points)
• Use Levene’s test to determine if the assumption of homogeneityof variances is valid. Give the hypotheses, test statistic,p-value, decision and conclusion. Use the 0.05 level ofsignificance. (8 points)
• Verify with Minitab by attaching or including relevant output.(6 points)