Sell aluminum contamination study discussed in ction 61 and

Sell aluminum contamination study discussed in ction 6.1 and in Chapter Exer apter 3, it was desirable to have mean content for samples of recycled plas- 1. In the aluminum con Exercise 2 of Section 6.1 and cise 2 of Chapter 3, it was aluminum tic be testi ev co um200 ppm. Use the five-step significance- low 200 ppm. Use the five-step significance ng format and determine the strength of the idence in the data that in fact this contamination oal has been violated. (You will want to begin with for goal has been violated. (You will wantamato Ho: = 200 ppm and use Ha: > 200 ppm.)

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