Question: Solve using given info We wish to test the hypotheses Ho: P1-P2 = 0 versus the hypothesis H1: P1 - P2 # 0 at a

Solve using given info

We wish to test the hypotheses Ho: P1-P2 = 0 versus the hypothesis H1: P1 - P2 # 0 at a 5% level of significance. Here, p1 denotes, of all bolts manufactured on Machine A, that fraction that are defective, and p2 denotes, of all bolts manufactured on Machine B, that fraction which consists of defective bolts. In order to test theses hypotheses, we obtain a random sample of 400 bolts manufactured on Machine A, and independently, we obtain a random sample 400 bolts from Machine B. Of the bolts from the Machine A sample we find that 20 are defective, whereas for the Machine B sample we find that 30 are defective. Compute the p-value. 0.0324 0.0528 0.0162 0.1442 0.2846

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