To decide whether two different types of steel have the same true average fracture toughness values, n

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To decide whether two different types of steel have the same true average fracture toughness values, n specimens of each type are tested, yielding the following results Calculate the P-value for the appropriate two-sample z test, assuming that the data was based on . Then repeat the calculation for . Is the small P-value for indicative of a difference that has practical significance? Would you have been satisfied with just a report of the P-value? Comment briefly

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