Question: Two types of plastic are suitable for use by an electronics component manufacturer. The breaking strength of this plastic is important. It is known that

Two types of plastic are suitable for use by an electronics component manufacturer. The breaking strength of this plastic is important. It is known that σ1 = σ2 = 1.0 psi. From a random sample of size n1 = 10 and n2 = 12, we obtain and the company will not adopt plastic 1 unless its mean breaking strength exceeds that of plastic 2 by at least 10 psi. Based on the sample information, should it use plastic 1? Use a = 0.05 in reaching a decision.

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